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Number System

Number System
7432 ÷ 32 x ? = 2787

78
12
41
21

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7432/32 x ? = 2787= ? = 2787 x 32/7432 = 12

Number System
A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ?

31/58
34/55
37/52
32/51

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55

Number System
√2304 x √? = 2832

3481
3381
3681
3581

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

√2304 x √? = 2832= 48 x √? = 2832= √? = 2832/48 = 59∴? = 59 x 59 = 3481

Number System
(12)² - (4.4)² - (0.04)² = ?

131.6384
124.6384
125.6384
129.6384

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384

Number System
35 + 15 * 1.5 = ?

75
57.5
5.25
51.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5

Number System
Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ?

625
525
425
325

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

625

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