Permutation and Combination is an important topic in the Quant section of the SNAP Exam. You can also download this Free Permutation and Combination Questions for SNAP PDF (with answers) by Cracku. These questions will help you to practice and solve the Permutation and Combination questions in the SNAP exam. Utilize this PDF practice set, <\/strong>which is one of the best sources for practising.<\/p>\n Download Permutation and Combination Questions for SNAP<\/a><\/p>\n Enroll to SNAP 2022 Crash Course<\/a><\/p>\n Question 1:\u00a0<\/b>In how many different ways can the letters of the word ‘STRESS’ be arranged<\/p>\n a)\u00a0360<\/p>\n b)\u00a0240<\/p>\n c)\u00a0720<\/p>\n d)\u00a0120<\/p>\n e)\u00a0None of these<\/p>\n 1)\u00a0Answer\u00a0(D)<\/strong><\/p>\n Solution:<\/b><\/p>\n Total number of letters = 6 of which 3 are the same.<\/p>\n Therefore, number of ways of arranging = $\\frac{6!}{3!}$ = $\\frac{720}{6}$ = 120<\/p>\n Question 2:\u00a0<\/b>A bag contains 7 blue balls and 5 yellow balls. If two balls are selected at random, what is the probability that none is yellow?<\/p>\n a)\u00a05\/33<\/p>\n b)\u00a05\/22<\/p>\n c)\u00a07\/22<\/p>\n d)\u00a07\/33<\/p>\n e)\u00a07\/66<\/p>\n 2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n Solution:<\/b><\/p>\n None yellow => both blue => is possible in $^7C_2$ ways<\/p>\n => probability = $\\frac{^7C_2}{^{12}C_2}$ = $\\frac{7}{22}$<\/p>\n Question 3:\u00a0<\/b>A die is thrown twice. What is the probability of getting a sum 7 from the two throws?<\/p>\n a)\u00a05\/18<\/p>\n b)\u00a01\/18<\/p>\n c)\u00a01\/9<\/p>\n d)\u00a01\/6<\/p>\n e)\u00a05\/36<\/p>\n 3)\u00a0Answer\u00a0(D)<\/strong><\/p>\n Solution:<\/b><\/p>\n Number of ways in which the sum is \u00a07 = (1,6),(2,5),(3,4),(4,3),(5,2),(6,1) => 6 ways<\/p>\n Total number of possibilities = 6 * 6 = 36<\/p>\n Probability that sum is 7 = $\\frac{6}{36}$ = $\\frac{1}{6}$<\/p>\n Question 4:\u00a0<\/b>In how many different ways can the letters of the word ‘THERAPY’ be arranged so that the vowels never come together?<\/p>\n a)\u00a0720<\/p>\n b)\u00a01440<\/p>\n c)\u00a05040<\/p>\n d)\u00a03600<\/p>\n e)\u00a04800<\/p>\n 4)\u00a0Answer\u00a0(D)<\/strong><\/p>\n Solution:<\/b><\/p>\n Number of ways of arranging seven letters = 7! Question 5:\u00a0<\/b>A bag contains 13 white and 7 black balls. Two balls are drawn at random. What is the probability that they are of the same colour?<\/p>\n a)\u00a0$\\frac{41}{190}$<\/p>\n b)\u00a0$\\frac{21}{190}$<\/p>\n c)\u00a0$\\frac{59}{290}$<\/p>\n d)\u00a0$\\frac{99}{190}$<\/p>\n e)\u00a0$\\frac{77}{190}$<\/p>\n 5)\u00a0Answer\u00a0(D)<\/strong><\/p>\n Solution:<\/b><\/p>\n Probability of getting two white balls = 13<\/sup>P2<\/sub> Take\u00a0 SNAP mock tests here<\/strong><\/span><\/a><\/p>\n Enrol to 10 SNAP Latest Mocks For Just Rs. 499<\/a><\/strong><\/span><\/p>\n Question 6:\u00a0<\/b>If 6 boys and 6 girls have to sit in a round circular music chair. So, that there is a girl between every 2 boys. Find the number of ways they can sit?<\/p>\n a)\u00a06! \u00d7 5!<\/p>\n b)\u00a06! \u00d7 4!<\/p>\n c)\u00a06! \u00d7 3!<\/p>\n d)\u00a06! \u00d7 2!<\/p>\n e)\u00a0None of these<\/p>\n 6)\u00a0Answer\u00a0(A)<\/strong><\/p>\n Solution:<\/b><\/p>\n Circular permutation = n! (n – 1)!<\/p>\n \u2234 Number of ways = 6! (6 – 1)! = 6! \u00d7 5!<\/p>\n Question 7:\u00a0<\/b>What is the number of words formed from the letters of the word \u2018JOKE\u2019 So that the vowels and consonants alternate?<\/p>\n a)\u00a04<\/p>\n b)\u00a08<\/p>\n c)\u00a012<\/p>\n d)\u00a018<\/p>\n e)\u00a0None of these<\/p>\n 7)\u00a0Answer\u00a0(B)<\/strong><\/p>\n Solution:<\/b><\/p>\n Word name: \u2018JOKE\u2019 Vowels: O, E Question 8:\u00a0<\/b>In how many different ways can 5 men and 3 women be seated in a row such that no two women are next to each other?<\/p>\n a)\u00a012200<\/p>\n b)\u00a014400<\/p>\n c)\u00a015600<\/p>\n d)\u00a016400<\/p>\n e)\u00a0None of the above<\/p>\n 8)\u00a0Answer\u00a0(B)<\/strong><\/p>\n Solution:<\/b><\/p>\n No two women would be seated next to each other if they sit between men. So, first the men can be arranged in 5! ways. There are six spots between the men. Number of ways to arrange the 3 women in those six spots is $ P_6^3 $ ways. So, total number of ways = 120*120 = 14400 ways.<\/p>\n Question 9:\u00a0<\/b>In how many different ways can the letter of the word ‘SIMPLE’ be arranged ?<\/p>\n a)\u00a0520<\/p>\n b)\u00a0120<\/p>\n c)\u00a05040<\/p>\n d)\u00a0270<\/p>\n e)\u00a0None of these<\/p>\n 9)\u00a0Answer\u00a0(E)<\/strong><\/p>\n Solution:<\/b><\/p>\n If there are n different letter in a word then n! different words can be formed.<\/p>\n In SIMPLE there are 6 different letters and hence 6! new words can be formed by different arangement.<\/p>\n Hence, 720 new words can be formed.<\/p>\n Question 10:\u00a0<\/b>In how many different ways can the letters of the word ‘SECOND’ be arranged ?<\/p>\n a)\u00a0720<\/p>\n b)\u00a0120<\/p>\n c)\u00a05040<\/p>\n d)\u00a0270<\/p>\n e)\u00a0None of these<\/p>\n 10)\u00a0Answer\u00a0(A)<\/strong><\/p>\n Solution:<\/b><\/p>\n If a word has n different letters in it, then they can be arranged in n! different ways.<\/p>\n Here SECOND has 6 different letters and they can be arranged in 6! ways i.e 720 different ways.<\/p>\n Instructions<\/b><\/p>\n Study the given information carefully and answer the question that follow: Question 11:\u00a0<\/b>The committee should have 2 trainees and 3 research associates ?<\/p>\n a)\u00a015<\/p>\n b)\u00a045<\/p>\n c)\u00a060<\/p>\n d)\u00a09<\/p>\n e)\u00a0None of these<\/p>\n 11)\u00a0Answer\u00a0(C)<\/strong><\/p>\n Solution:<\/b><\/p>\n We have to select 2 trainees out of 3 trainees and 3 resarch associates out of 6 resarch associates.<\/p>\n Required number of ways\u00a0= $^3C_2*^6C_3 = 60$ ways<\/p>\n Question 12:\u00a0<\/b>The committee should have all 4 professors and 1 research associate or all 3 trainees and 2 professors ?<\/p>\n a)\u00a012<\/p>\n b)\u00a013<\/p>\n c)\u00a024<\/p>\n d)\u00a052<\/p>\n e)\u00a0None of these<\/p>\n 12)\u00a0Answer\u00a0(A)<\/strong><\/p>\n Solution:<\/b><\/p>\n 4 professors and 1 resarch associate can be selected in $^4C_4*^6C_1 = 6$ ways<\/p>\n Similarly 3 trainees and 2 professors would be selected in $^3C_3*^4C_2$ ways = 6<\/p>\n Total ways = 6+6 = 12<\/p>\n Instructions<\/b><\/p>\n Study the given information carefully and answer the question that follow: Question 13:\u00a0<\/b>If the three marbles are picked at random what is the probability that at least one is blue ?<\/p>\n a)\u00a0$\\frac{7}{12}$<\/p>\n b)\u00a0$\\frac{37}{44}$<\/p>\n c)\u00a0$\\frac{5}{12}$<\/p>\n d)\u00a0$\\frac{7}{44}$<\/p>\n e)\u00a0None of these<\/p>\n 13)\u00a0Answer\u00a0(B)<\/strong><\/p>\n Solution:<\/b><\/p>\n Required probability = 1 – Prob. that no ball is blue = $1- \\frac{^7C_3}{^{12}C_3} = 37\/44$<\/p>\n Question 14:\u00a0<\/b>If two marbles are drawn at random what is the probability that both are red ?<\/p>\n a)\u00a0$\\frac{3}{7}$<\/p>\n b)\u00a0$\\frac{1}{2}$<\/p>\n c)\u00a0$\\frac{2}{11}$<\/p>\n d)\u00a0$\\frac{1}{6}$<\/p>\n e)\u00a0None of these<\/p>\n 14)\u00a0Answer\u00a0(E)<\/strong><\/p>\n Solution:<\/b><\/p>\n Probability that both the balls are red = $\\frac{^4C_2}{^{12}C_2} = \\frac{1}{11}$<\/p>\n Question 15:\u00a0<\/b>If three marbles are picked at random what is the probability that either all are green or all are red ?<\/p>\n a)\u00a0$\\frac{7}{44}$<\/p>\n b)\u00a0$\\frac{7}{12}$<\/p>\n c)\u00a0$\\frac{5}{12}$<\/p>\n d)\u00a0$\\frac{1}{44}$<\/p>\n e)\u00a0None of these<\/p>\n 15)\u00a0Answer\u00a0(D)<\/strong><\/p>\n Solution:<\/b><\/p>\n Number of ways of selecting 3 green marbles out of 3 green marbles\u00a0=$^3C_3 = 1$<\/p>\n Number of ways of selecting 3 red marbles out of 4 red marbles =\u00a0$^4C_3 = 4$<\/p>\n Total ways = 1+4 = 5<\/p>\n Probability =$\\frac{5}{^{12}C_3} = 1\/44$<\/p>\n
\nLet us consider the two vowels as a group
\nNow the remaining five letters and the group of two vowels = 6
\nThese six letters can be arranged in 6!2! ways( 2! is the number of ways the two vowels can be arranged among themselves)
\nThe number of ways of arranging seven letters such that no two vowels come together
\n=\u00a0Number of ways of arranging seven letters – Number of ways of arranging the letters with the two vowels being together
\n= 7! – (6!2!)
\n= 3600<\/p>\n
\nProbability of getting two black balls = 7<\/sup>P2<\/sub>
\nTotal probability = (13<\/sup>P2<\/sub>\u00a0+\u00a07<\/sup>P2<\/sub>)\/20<\/sup>P2<\/sub>\u00a0= 198\/380 = 99\/190<\/p>\n
\nConsonants: J, K
\n\u2234 Possible arrangement beginning with consonant: JOKE, KOJE, JEKO, KEJO = 4 Numbers
\nbeginning with vowel: OJEK, OKEJ, EJOK, EKOJ = 4 Numbers
\nRequired number = 4+4 = 8 numbers<\/p>\n
\nA committee of five members is to be formed out of 3 trainees 4 professors and 6 research associates In how many different ways can this be done if____<\/p>\n
\nA basket contains 4 red 5 blue and 3 green marbles.<\/p>\n