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Number System

Number System
4.78% of 1255 + 3.24% of 440=0.5% of ?

12849
14849
11849
13849

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849

Number System
The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ?

3289
2476
1760
4589

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A + B + C + D + E/5 = 42∴ C = 42,   ∴ B = 40,  ∴ D = 44∴ B x D = 40 x 44 = 1760

Number System
If three eighth of a number is 141. What will be the approximately value of 32.08% of this number?

60
160
120
90

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x * 3/8 = 141 => x= 376376 * 32.08/100 = 120

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

22
20
21
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ?

Rs. 74
Rs. 68
Rs. 62
Rs. 79

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5         = 4.5 + 8.5 + 22 + 18 + 15         = Rs 68

Number System
If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ?

7
9
10
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9

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