How to prepare prelimes exams

How to solve number siries

An article was purchased for Rs.78.350,Its price was marked up by 30%,It was sold at a discount of 20% on the marked up price.what was the profit percent on the cost price?

Two persons Alex and Mac played a game of coins. In the game, a player can pick 1, 2 or 3 coins in his turn. If a person is left with 3 coins, he can choose to pick either 1, 2 or 3 coins and if a person is left with 2 coins, he can choose to pick either 1 or 2 coins. But if a person is left with only one coin, he will have to pick that coin. Assume that both the players play intelligently. Q.61 The option of picking 2 coins could not be exercised and the person who picked the last coin loses the game. If Alex started the game and won it, then which of the following could not be the number of total number of coins at the beginning of the game? a 20 b 30 c 25 d 48

i have a total of 1000 rs. item A costs 110 rs. , B costs 90 rs. , C costs 70 rs. , D costs 40 rs. , and E costs 45 rs. for every item D that i purchase, i must also buy two items of B. For every item A , i must buy one of item C. for every item E, i must also buy two of item D and one of item B. For every item i purchase i earn 1000 points and for everry rs. not spent i earn a penalty of 1500 points. my objective is to maximise the points i earn. how many items must i purchase to maximise my points?

How to solve LR game problems ? Please provide an easy way...

Internet is for nerds. Shyam is a nerd. Internet is for Shyam. 2. Intelligence is for wise men. Some people are wise. Intelligence is for people.3. Capital punishment is for killers. Ravan is a killer. Capital punishment is for Ravan.4. Liquor is for drinking. Juice is for drinking. Some liquor is juice. A.1 B.4 C.1 and 3 D.1 and 2.....plz explain how answer is option c

a polynomial ax3+bx2+cx+d intersects x axis at 1,-1 and y axis at 2 then value of b is??

A 280metre long train moving with an avg speed of 108 km/hr crosses a platform in 12 sec. A man crosses the same platform in 10sec.what is the speed of the man in metre/sec?

I have been regularly scoring 150-160 in NMAT please suggest some things at least clear the cut off..