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Number System

Number System
If 272/3 × 81-1/2 = 3x, the value of x is

0
1
3
2

ANSWER DOWNLOAD EXAMIANS APP

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' ?

1580
1780
1680
1480

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
Supply the missing figure : 1, 4, 9, 16, 25 .... 49

23
36
16
42

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

36

Number System
The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers?

70
Cannot be determined
92
29

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.

Number System
576÷ ? x114=8208

8
9
10
11

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

Number System
A gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same. If there are 4 rows or 5 rows or 6 rows, then no tree will be left. Find the least

30
60
240
120

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The least number of trees that are required = LCM(4, 5, 6) = 60.

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