{"id":30058,"date":"2019-06-07T13:03:09","date_gmt":"2019-06-07T07:33:09","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=30058"},"modified":"2019-06-07T13:03:09","modified_gmt":"2019-06-07T07:33:09","slug":"rrb-group-d-expected-maths-questions-2019-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/rrb-group-d-expected-maths-questions-2019-pdf\/","title":{"rendered":"RRB Group-D Expected Maths Questions 2019 PDF"},"content":{"rendered":"

RRB Group-D Expected Maths Questions 2019 PDF<\/strong><\/span><\/h2>\n

Download Top-15 RRB Group-D Expected Maths Questions PDF.\u00a0RRB GROUP-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam.<\/p>\n

Download RRB Group-D Expected Maths Questions PDF<\/a><\/p>\n\n

Download RRB Group-D Previous Papers PDF<\/a><\/p>\n

Take a RRB Group-D free mock test<\/a><\/p>\n

Question 1:\u00a0<\/b>A car travels 270 km in 3 hours. What is its speed?<\/p>\n

a)\u00a030 m\/sec<\/p>\n

b)\u00a020 m\/sec<\/p>\n

c)\u00a025 m\/sec<\/p>\n

d)\u00a015 m\/sec<\/p>\n

Instructions<\/b><\/p>\n

Question 2:\u00a0<\/b>Three people start to run around a circle at the same time.Time taken for them to complete a round is 15 sec,20 sec and 30 sec then after how many seconds will they meet for the 1st time ?<\/p>\n

a)\u00a00.8 min<\/p>\n

b)\u00a01 min<\/p>\n

c)\u00a01.5 min<\/p>\n

d)\u00a01.2 min<\/p>\n

Question 3:\u00a0<\/b>If the roots of the quadratic equation $x^2 – 6x + 8 = 0$ are the reciprocals of the roots of another equation, which of the following is a correct representation of that equation?<\/p>\n

a)\u00a0$x^2 – 8x + 6 = 0$<\/p>\n

b)\u00a0$8x^2 – x + 6 = 0$<\/p>\n

c)\u00a0$8x^2 – 6x + 1 = 0$<\/p>\n

d)\u00a0$6x^2 – x + 8 = 0$<\/p>\n

Take a free mock test for RRB Group-D<\/a><\/p>\n

770 Mocks (cracku Pass) Just Rs.199<\/a><\/p>\n\n

Question 4:\u00a0<\/b>What is the sum of the first 10 terms of the series 2, 5, 8, 11, \u2026\u2026?<\/p>\n

a)\u00a0135<\/p>\n

b)\u00a0145<\/p>\n

c)\u00a0155<\/p>\n

d)\u00a0165<\/p>\n

Question 5:\u00a0<\/b>What is the sum of $5^2 + 6^2 + 7^2 + . . .14^2$?<\/p>\n

a)\u00a01015<\/p>\n

b)\u00a0985<\/p>\n

c)\u00a01065<\/p>\n

d)\u00a02010<\/p>\n

Question 6:\u00a0<\/b>A sum of money yields an interest of Rs.3920 at a compound interest of 20% per annum for first year and 30% per annum for second year. Find the sum.<\/p>\n

a)\u00a0Rs.7500<\/p>\n

b)\u00a0Rs.70000<\/p>\n

c)\u00a0Rs.4500<\/p>\n

d)\u00a0Rs.7000<\/p>\n

RRB Group D previous year papers<\/a><\/p>\n

Daily Free RRB Online Test<\/a><\/p>\n

Question 7:\u00a0<\/b>A lent a sum of Rs.50000 to B at 15% Simple Interest for 2 years. B immediately lent it to C at 15% Compound Interest compounded annually for 2 years. Find the profit of B.<\/p>\n

a)\u00a0Rs.1025<\/p>\n

b)\u00a0Rs.1500<\/p>\n

c)\u00a0Rs.1125<\/p>\n

d)\u00a0Rs.1250<\/p>\n

Question 8:\u00a0<\/b>Calculate the amount(approx in Rs.) on Rs. 72000 @ 3% p.a. compounded half yearly for 2 years.<\/p>\n

a)\u00a074692<\/p>\n

b)\u00a076492<\/p>\n

c)\u00a076418<\/p>\n

d)\u00a0None of these<\/p>\n

Question 9:\u00a0<\/b>Find the probability of forming a 8 letter word with letters A,C,G,E,I,F,D,K such that each letter is used exactly once and all the vowels come together?<\/p>\n

a)\u00a01\/7<\/p>\n

b)\u00a05\/56<\/p>\n

c)\u00a01\/14<\/p>\n

d)\u00a03\/28<\/p>\n

Question 10:\u00a0<\/b>Find the probability of forming a 4 letter words out of the letter A, C, E, I, G, H, Z, W such that the first letter is W.<\/p>\n

a)\u00a03\/8<\/p>\n

b)\u00a01\/8<\/p>\n

c)\u00a03\/4<\/p>\n

d)\u00a04\/5<\/p>\n

RRB Group-D Important Questions (download PDF)<\/a><\/p>\n\n

Question 11:\u00a0<\/b>Positive numbers \u2018a\u2019 and \u2018b\u2019 when divided by 7 leaves a remainder of 5 and 6 respectively then what is the remainder obtained when a-b is divided by 7 if a>b ?<\/p>\n

a)\u00a00<\/p>\n

b)\u00a02<\/p>\n

c)\u00a04<\/p>\n

d)\u00a06<\/p>\n

Question 12:\u00a0<\/b>Convert 379 into binary system ?<\/p>\n

a)\u00a0100011011<\/p>\n

b)\u00a0100111011<\/p>\n

c)\u00a0101111011<\/p>\n

d)\u00a0101011011<\/p>\n

Question 13:\u00a0<\/b>What is the last digit of the sum of first 32 whole numbers?<\/p>\n

a)\u00a08<\/p>\n

b)\u00a06<\/p>\n

c)\u00a05<\/p>\n

d)\u00a02<\/p>\n

Instructions<\/b><\/p>\n

Question 14:\u00a0<\/b>A square having an area of 81 square meters is made into an equilateral triangle then what is the area of the triangle ?<\/p>\n

a)\u00a06$\\sqrt{3}$<\/p>\n

b)\u00a012$\\sqrt{3}$<\/p>\n

c)\u00a036$\\sqrt{3}$<\/p>\n

d)\u00a024$\\sqrt{3}$<\/p>\n

Instructions<\/b><\/p>\n

Question 15:\u00a0<\/b>Perimeter of a square is 32 and is equal to the length of the diagonal of the other square.What is the area of the other square ?<\/p>\n

a)\u00a0128<\/p>\n

b)\u00a0512<\/p>\n

c)\u00a01024<\/p>\n

d)\u00a0256<\/p>\n\n

General Science Notes for RRB Exams (PDF)<\/a><\/p>\n

Answers & Solutions:<\/strong><\/span><\/p>\n

1)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Speed of the car = 270\/3 = 90 km\/hr
\nSpeed of the car in m\/sec = $90 \\times \\dfrac{5}{18} = 25$ m\/sec.<\/p>\n

2)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

As they all start at the same time an the time after which they three meet is simply the lcm of durations of time taken=LCM of 15,20 and 30
\n= 60 sec<\/p>\n

3)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

If the roots of the quadratic equation $ax^2 + bx + c = 0$ are the reciprocals of the roots of another quadratic equation, then the other equation is given by $cx^2 + bx + a = 0$
\nSo, option c) is the correct answer.<\/p>\n

4)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

2, 5, 8, 11 ….. are in AP<\/p>\n

a = 2, d = 3<\/p>\n

$S_n = \\frac{n}{2}[2a+(n-1)d]$<\/p>\n

$S_{10} = \\frac{10}{2}[2(2)+(10-1)(3)]$<\/p>\n

$S_{10} = 5[4+(9)(3)]$<\/p>\n

$S_{10} = 5[31]$<\/p>\n

$S_{10} = 155$<\/p>\n

So the answer is option C.<\/p>\n

5)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Let S1 = $1^2 + 2^2 + 3^2 + . . .14^2$ and S2 = $1^2 + 2^2 + 3^2 + 4^2$. Hence, the given series is S1 – S2.
\nS1=14*15*29\/6 = 7*29*5 = 1015
\nS2 = 4*5*9\/6 = 2*5*3=30.<\/p>\n

Hence, the sum of the given series = S2 – S1 = 1015 – 30 = 985.<\/p>\n

6)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

Let the principal be Rs.100P
\nAmount at 20% per annum for 1 year = 120% of Rs.100P = Rs.120P
\nAmount at 30% per annum for 2nd year = 130% of Rs.120 = Rs.156P
\nCompound Interest = Rs.156P – Rs.100P = Rs.56P
\nGiven, 56P = 3920
\n\u21d2 P = 70
\nTherefore, Principal = 100P = 100*70 = Rs.7000<\/p>\n

7)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

A lent Rs.50000 to B at 15% Simple Interest for 2 years.
\nThen, Interest = 2*15% of 50000 = 30% of 50000 = Rs.15000
\nB lent it to C at 15% Compound Interest for 2 years.
\nAmount after 2 years = 115% of 115% of 50000 = Rs.66125
\nCompound Interest = Rs.66125 – Rs.50000 = Rs.16125
\nProfit of B = Rs.16125 – Rs.15000 = Rs.1125<\/p>\n

8)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Given the Principal(P) = Rs. 72,000\/-
\nRate of Interest (R) = 3% (compounded half yearly, n=2)
\nTime period(t) = 2 years
\nAmount on compound Interest is calculated by
\n$A = P(1+\\frac{R\/n}{100})^{nt}$
\n$A = 72,000(1+\\frac{3\/2}{100})^{2\\times2}$
\n$A = 72,000(1+\\frac{1.5}{100})^4$
\n$A = 72,000(1.015)^4$
\n$A = 76418.17$
\n$A$ ~ $Rs. 76418\/-$<\/p>\n

9)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

In these letters, no letter is used more than once. So the total no. of words formed with the letters A,C,G,E,I,F,D,K is 8! Ways.
\nA,C,G,E,I,F,D,K
\nIn this group A, E, I are vowels. Let us consider them as one group. This group along with the other 5 letters can be arranged in (5+1)! = 6! Ways.<\/p>\n

Now this group contains 3 letters which can be arranged in 3! Ways<\/p>\n

Total number of ways of arranging all the letter such that vowels come together = 3!*6!<\/p>\n

Probability = 3!*6!\/8! = 6\/56 = 3\/28<\/p>\n

10)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Number of ways of choosing 4 letters out of 8 letters and forming words with those 4 letters =$^8C_4*4!$
\nNow the first letter is W, we have to choose 3 letters out of 7 letters
\nNumber of ways of choosing 3 letters out of 7 letters =$^7C_3*3!$
\nProbability =$\\frac{^7C_3*3!}{^8C_4*4!}$ = 1\/8<\/p>\n

11)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

\u2018a\u2019 leaves a remainder of 5 when divided by 7 so a=7x+5(let x be the quotient)
\n\u2018b\u2019 leaves a remainder of 6 when divided by 7 so b=7y+6(let y be the quotient)
\na-b=7(x-y)-1
\nWhen divided by 7 it gives -1 as remainder i.e -1+7=6<\/p>\n

12)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

 <\/p>\n

<\/figure>\n

$(379)_{10} = (101111011)_2$<\/p>\n

So the answer is option C.<\/p>\n

13)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

First 32 whole numbers = 0,1,2,\u2026..31.
\nSum of first 32 whole numbers = n(n+1)\/2.
\nHere, n = 31 since the series starts with 0.
\nSum = 31*32\/2 = 31*16.
\nAs we can clearly see, the last digit of the sum will be 6. Therefore, option B is the right answer.<\/p>\n

14)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

Area of the square $s^{2}$
\n$s^{2}$=81
\ns=9
\n4s=36
\nTriangle has 3 sides and each side has equal length as it is equilateral triangle and so a=36\/3
\n=12
\nArea of an equilateral triangle=$\\sqrt{3}\\times a^{2}\/4$
\n=36$\\sqrt{3}$<\/p>\n

15)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

we have 4*s1=$\\sqrt{2}$*s2
\ns2=32\/$\\sqrt{2}$
\nArea of a square=s2*s2
\n=32*32\/2
\n=512<\/p>\n\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n

We hope this Expected Maths Questions for RRB Group-D Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

RRB Group-D Expected Maths Questions 2019 PDF Download Top-15 RRB Group-D Expected Maths Questions PDF.\u00a0RRB GROUP-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam. Download RRB Group-D Previous Papers PDF Take a RRB Group-D free mock test Question 1:\u00a0A car travels 270 km in 3 hours. […]<\/p>\n","protected":false},"author":41,"featured_media":30060,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1679,1603],"tags":[489,491,1637,492,1647],"class_list":{"0":"post-30058","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-railways","10":"category-rrb-group-d","11":"category-rrb-ntpc","12":"tag-railway-exam","13":"tag-rrb","14":"tag-rrb-exam","15":"tag-rrb-group-d","16":"tag-rrb-mocks"},"better_featured_image":{"id":30060,"alt_text":"RRB Group-D Expected Maths Questions PDF","caption":"RRB Group-D Expected Maths Questions PDF","description":"RRB Group-D Expected Maths Questions 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