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Number System

Number System
17580 x 1.8 - 13720 x 2.1 = ? x 2.4

1140
1160
1180
1120

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180

Number System
When 102 is reduced from a number, the number gets reduced by 88%. What is that number ?

550
650
750
850

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

850

Number System
{(742)² ÷ 36} ÷ 2 = ?

423.5
420.5
422.5
421.5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (174 x 174/36) ÷ 2 = 841/2 = 420.5

Number System
(√6 + 1)² = ? + 2√6

5
7
8
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7

Number System
Which one of the following represents the sum of the first n even numbers?

N(N + 1)
N2+ 1
N(N – 1)
N2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

N (N + 1)

Number System
7.8 x 4.5 x 4.2/0.14 = ?

1053
1032
1087
1012

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7.8 x 4.5 x 4.2/0.14 = 1053

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