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Number System

Number System
106 * 106 - 94 * 94 = ?

2400
2000
1906
1904

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Number System
The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is:

289
1/289
290/289
289/290

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289

Number System
64% of 2650+40% 0f 320=?

1578
2096
1824
1247

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1824

Number System
What is the difference between the local value of 7 and 5 in the number 2574?

403
413
430
570

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

500 – 70 = 430

Number System
Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 ....

19
7
15
1

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

19

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

2100
2000
2101
2001

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

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