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Number System

Number System
The Twenty-First Century will start on January 1 in the year

2001
2100
2000
2101

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

Number System
What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361

11
121
225
321

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The series is (Prime No.)²So it is (11)² = 121

Number System
217 * 217 + 183 * 183 = ?

81268
80578
80698
79698

ANSWER DOWNLOAD EXAMIANS APP

Number System
Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number?

160
180
140
240

ANSWER DOWNLOAD EXAMIANS APP

Number System
Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ?

Rs. 2000
Rs. 3000
Rs. 5000
Rs. 4000

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3  = 5000

Number System
(444 x 44 x 4) ÷ 40 ?

2153.6
2053.6
1853.6
1953.6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 444 x 44 x 4/40 = 1953.6

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