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Number System

Number System
Complete the series : 11, 12, 17, 18, 23, 24 ...

None of these
14
30
12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

None of these

Number System
What should come in place of question mark (?) in the following number series ? 7, 176, 480, 1058, 2188, 4426, ?

8882
8881
8888
8884

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Series is (No. + 9²) x 2, (+8²) x 2, (+7²) x 2, (+6²) x 2.......

Number System
The average of five consecutive even numbers, p, q, r, s and t is 40. What is the product of 'r' and 's' ?

1480
1580
1680
1780

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x, x + 2, x + 4, x + 6, and x + 8Avg = x + x + 2 + x + 4 + x + 6 + x + 8/5 = 40Therefore, 5x + 20 = 200Therefore, x = 180/5 = 36Therefore, r = x + 4 = 40                                 s =  x + 6 = 42Therefore, Product = 1680

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

160
180
28
12

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
3251 + 587 + 369 - ? = 3007

1200
1375
1300
1250

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200

Number System
(4 86%of 6500) ÷ 36 =?

877.5
977.5
677.5
777.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

877.5

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