1, 2, 6, 15, 31, 56, 91 (a) 31          (b) 91           (c) 56          (d) 15

63, 31, 15, 7, 3, ?

15,31, 63,127,255 (…)

1, 5, 14, 30, 50, 55, 91 (a) 5 (b) 50 (c) 55 (d) 91

56, 91, 175, 417, 777

15, 31, 63,127, 255, (......) (a) 513 (b) 511 (c) 517 (d) 523

1 15 16 31 47 78 125 ?

15 22 56 183 ? 3755 22542

The number of revolutions made by a wheel of diameter 56 cm in covering a distance of 1.1 km is: (a) 31.25 (b) 56.25 (c) 62.5 (d) 625

Solve 11,100,15,91 ,19,83,23..... (A) 75 (B) 66 (C) 67 (D) 76

10 x 15 is equal to (a) 56 (b) 65 (c) 30 (d) 25