Ibps - Aptitude - Numbers

2, 6, 12, 20, 30, 42, 56, (__)

A.  60

B.  64

C.  72

D.  70

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Let N = 553 + 173 - 723. N is divisible by:

A.  both 7 and 13

B.  both 3 and 13

C.  both 17 and 7

D.  both 3 and 17

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6, 12, 48, 100, 384, 768, 3072 Find out the wrong number in the series.

A.  768

B.  100

C.  384

D.  12

E.  48

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40.83 x 1.02 x 1.2 =?

A.  41.64660

B.  49.97592

C.  42.479532

D.  58.7952

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The H.C.F. of 2923 and 3239 is :

A.  37

B.  47

C.  73

D.  79

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The value of (4.7 x13.26 + 4.7 x 9.43 + 4.7 x 77.31 ) is

A.  0.47

B.  47

C.  470

D.  4700

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Given that 268*74 =19832, find the values of 2.68 * 0.74.

A.  1.9832

B.  1.9831

C.  1.8831

D.  1.9952

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How many factors of 25*36*52 are perfect squares?

A.  20

B.  24

C.  26

D.  28

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H.C.F. of 3240, 3600 and a third number is 36 and their L.C.M. is 2^4 x 3^5 x 5^2 x 7^2 The third number is:

A.  2^2 x 3^5 x 7^2

B.  2^2 * 5^3 * 7^2

C.  2^2 * 5^2 * 7^2

D.  2^3 * 3^5 * 7^2

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If n is a natural number, then (6n2 + 6n) is always divisible by:

A.  6 only

B.  12 only

C.  6 and 12 both

D.  by 18 only

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An automobile financier claims to be lending money at simple interest, but he includes the interest every six months for calculating the principal. If he is charging an interest of 10%, the effective rate of interest becomes:

A.  10%

B.  10.25%

C.  10.5%

D.  None of these

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