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Number System

Number System
384×12×2=?

9216
8465
7487
6123

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

9216

Number System
On converting the following base-2 numeral in base ten, 1101101, we get

107
108
106
109

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

109

Number System
Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ?

9
7
8
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9

Number System
96% of a number is 19584. What is 56% of that number ?

11424
11224
11324
11524

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.According to the question.96% of x = 19584= x = 1958 x 100/96 = 20400∴ 56% of 20400= 20400 x 56/100= 11424

Number System
9 3/4 + 7 2/17 - 9 1/15 = ?

7 817/1020
9 719/1020
7 719/1020
9 817/1020

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020

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

382880
372880
392880
362880

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

No. of letters = 9!                       = 9*8*7*6*5*4*3*2*1                       = 362880

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