Quant Problem

If x-y>10 Is x-y>x+y ?
1) x=8
2) y=-20

plz explain in detail, answer is 2/5

Permutation/Combination Problem

How many ways can the letters of the word COMPUTER be arranged so that vowels occupy even positions ?

Question

If w, x, y, and z are consecutive odd integers and
w < x < y < z, then w + x is how much less than y + z ?
(A) 2
(B) 4
(C) 8
(D) 10
(E) 16

Quant Problems

How many positive integers less than 30 are either a multiple of 2, an odd multiple of 9, or the sum of a positive multiple of 2 and a positive multiple of 9 ? (A) 27 (B) 26 (C) 25 (D) 24 (E) 23 Answer should be 26 instead of 25 ? 87, 77, 51, 65, 90, 33, 39, 74 Which of the following numbers is grea...

Quant Problem

There are least 50 museums in City X that are open on Tuesdays. If 20 percent of the museums in City X that are open on Mondays are also open on Tuesdays, are more of the museums open in City X on Mondays than Tuesdays? (1) 40 museums in City X are open both Mondays and Tuesdays. (2) 30 percent of t...

2nd one answer is 4 they said we have to subtract 9 from 12 .
3rd , the answer is correct but why those options are forbidden
(Two groups are considered different if at least one group member is different )
Why are we calculating for 3 seniors and not 2 and 1 seniors

Quant Problem

Each card in a deck has an integer written on it, and the integers on each of the 12 cards in the deck are consecutive. In a certain game, the number points awarded for each turn is determined by drawing two cards and multiplying the numbers shown on the cards. If the points awarded in three turns a...