Numbers - Arithmetic Aptitude Questions and Answers

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106 x 106 - 94 x 94 = ?

A.

2400

B.

2000

C.

1904

D.

1906

E.

None of these

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A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. When it is successively divided by 5 and 4, then the respective remainders will be

A.

1, 2

B.

2, 3

C.

3, 2

D.

4, 1

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8796 x 223 + 8796 x 77 = ?

A.

2736900

B.

2638800

C.

2658560

D.

2716740

E.

None of these

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8988 Ã· 8 Ã· 4 = ?

A.

4494

B.

561.75

C.

2247

D.

280.875

E.

None of these

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Answer : Option D

Explanation :

Given Exp. = 8988 x $\frac { 1 } { 8 } \times$ $\frac { 1 } { 4 }$ = $\frac {2247 } { 8}$ =280.875

287 x 287 + 269 x 269 - 2 x 287 x 269 = ?

A.

534

B.

446

C.

354

D.

324

E.

None of these

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Which one of the following can't be the square of natural number ?

A.

30976

B.

75625

C.

28561

D.

143642

E.

None of these

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(1000)⁹ Ã· 10²⁴ = ?

A.

10000

B.

1000

C.

100

D.

10

E.

None of these

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Answer : Option B

Explanation :

Given Exp. =^{$\frac { (1000)^9 } { 10^24} =$ $\frac { (10)^39 } {10^24}$}= $\frac {(10^27} { 10^24 }$ =10^(27-24) = 10³ = 1000

{(476 + 424)² - 4 x 476 x 424} = ?

A.

2906

B.

3116

C.

2704

D.

2904

E.

None of these