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Number System

Number System
What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4?

6084
6184
6048
5084

ANSWER DOWNLOAD EXAMIANS APP

Number System
A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ?

6353
6373
6363
6383

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + x + 1 + x + 2 + x + 3 + x + 4  = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80  ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383

Number System
Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5.

219
207
197
187

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.

Number System
The difference between two integers is 5. Their product is 500. Find the numbers.

21, 26
30, 25
20, 25
15, 20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.

Number System
How many numbers up to 100 and 300 are divisible by 11?

18
20
22
21

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(300 – 100)/11 = 200/11 = 18 2/1118 Numbers

Number System
If 70% of an equal to 40% of b, then ratio between a and b is?

7: 11
None
7: 4
4: 7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

70 a = 40 ba: b = 4: 7

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