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Number System

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

124.6384
131.6384
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
The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ?

1468
1168
1292
1327

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34,                             E = 38Therefore, Product = 34 x 38 = 1292

Number System
If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ?

12/25
6/7
3/5
13/25

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25

Number System
384×12×2=?

7487
9216
8465
6123

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

9216

Number System
Complete the series : 1, 8, 27, 64, 125, 216 .....

373
363
343
353

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

343

Number System
What should come in place of the question mark (?) in the following number series ? 888 888 444 148 ? 7.4

35
33
37
29

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

888 ÷ 1 = 888888 ÷ 2 = 444444 ÷ 3 = 148148 ÷ 4 = 3737 ÷ 5 = 7.4

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