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Number System

Number System
A number when multiplied by five times of itself give the value equal to 1445. What is the number ?

18
15
16
17

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17

Number System
In how many different ways can the letters of the word "MOBILIZE" be arranged ?

18456
17453
20160
19765

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160

Number System
√2304 x √? = 2832

3381
3581
3481
3681

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ?

641.68
631.68
651.68
621.68

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 1361.20 - 709.52 = 651.68

Number System
In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ?

18
22
24
28

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28

Number System
What is the difference between the largest and the smallest number written with 7, 7, 0, 7?

6893
693
6993
6093

ANSWER DOWNLOAD EXAMIANS APP
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