Page 39 - GMAT 2017b_Neatb

Quantitative Reasoning Test 3

2 7
(B) (A)
3 11
1 7
( C) (B)
3 30
5 5
(D) ( C)
6 11
7
(D)
100.A bag contains 5 white, 7 red and 8 black balls. If 4 balls 15
are drawn one by one with replacement, what is the
probability that all are white? 105.I forgot the last digit of a 7-digit telephone number. If I
1 randomly dial the final 3 digits after correctly dialling
(A)
256 the first four, then what is the chance of dialling the
1 correct number?
(B)
16 1
4 (A) 1001
( C)
20 1
4 (B) 990
(D)
8 1
( C)
999
101.A dice is thrown 6 times. If “getting an odd number” is a (D) 1
“success”. The probability of 5 successes is 1000
1
(A)
10 106.In his wardrobe, Timothy has 3 trousers. One of them
3 is black the second blue, and the third brown. In his
(B)
32 wardrobe, he also has 4 shirts. One of them is black
5 and the other 3 are white. He opens his wardrobe in the
( C)
6 dark and picks out one shirt trouser pair without
25 examining the colour. What is the likelihood that
(D)
26 neither the shirt nor the trouser is black?
(A) 1/12
102.A bag has 4 red and 5 black balls. A second bag has 3 red (B) 1/6
and 7 black balls. One ball is drawn from the first bag ( C) 1/4
and two from the second. The probability that there are (D) ½
two black balls and a red ball is
(A) 14
45
(B) 11
45
7
( C)
15
9
(D)
54
103.There are 6 positive and 8 negative numbers. Four
numbers are chosen at random and multiplied. The
probability that the product is a positive number is
500
(A)
1001
503
(B)
1001
505
( C)
1001
101
(D)
1001
104. A bag contains 3 white balls and 2 black balls. Another
bag contains 2 white balls and 4 black balls. A bag and a
ball are picked at random. The probability that the ball
will be white is
29