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Number System

Number System
Supply the missing figure : 3, 11, 8, 16, 13 .... 18

21
12
28
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

21

Number System
Find the least value of 3x + 4y if x2y3 = 6.

10
6
3
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

Number System
The product of two consecutive position odd numbers is 6723. What is the smaller number?

74
83
71
79

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83

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

9
7
10
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers?

11, 6
12, 9
10, 5
12, 7

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Number System
Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is:

5
10
6
4

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