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Number System

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

2508
2520
2504
2510

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520

Number System
What is the least number to be subtracted from 696 to make it a perfect square?

16
20
1
71

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.

Number System
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

160
12
28
180

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.

Number System
(444 x 44 x 4) ÷ 40 ?

1953.6
2053.6
2153.6
1853.6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 444 x 44 x 4/40 = 1953.6

Number System
35%of ?=242

693
542
394
487

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

693

Number System
√2304 x √? = 2832

3481
3581
3381
3681

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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