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Number System

Number System
732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ?

651.68
641.68
621.68
631.68

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 1361.20 - 709.52 = 651.68

Number System
When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ?

45
55
35
65

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45

Number System
Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers?

62, 18
65, 15
60, 20
64, 16

ANSWER DOWNLOAD EXAMIANS APP

Number System
7.8 x 4.5 x 4.2/0.14 = ?

1012
1053
1087
1032

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7.8 x 4.5 x 4.2/0.14 = 1053

Number System
Two-third of a positive number and 25/216 of its reciprocal are equal. The number is:

12/5
5/12
25/144
144/25

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12

Number System
(1024—263—233)÷(986—764— 156) =?

None of these
8
10
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

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