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2, 6, 12, 20, 30, 42, 56, (......) (a...

2, 6, 12, 20, 30, 42, 56, (......) (a) 60        (b) 64          (c) 72         (d) 70

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2 8 12 20 30 42 56

56, 72, 90, 110, 132, 150 (a) 72 (b) 110 (c) 132 (d) 150

The next number of the sequence 2,6, 12, 20, 30, 42, 56. — Is

Which number will fit in question mark (?) place in the following series? 2, ?, 12, 20, 30, 42 (A) 2 (B) 4 (C)6 (D) 8

The simplification of 3.36-2.05+1.33 equals (a) 2.60 (b) 2.64 (c) 2.61 (d) 2.64

42 : 56 : : 72 : ? (a) 81 (b) 90 (c) 92 (d) 100

{:(6,7,8),(36,49,64),(42,56,?):}

Find the sum : (1)/(2) + (1)/(6) + (1)/(12) + (1)/(20) + (1)/(30 ) + (1)/(42) + (1)/(56) + (1)/(72) + (1)/(90) + (1)/(110) + (1)/(132)

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