? 16 28 58 114 204

7 10 16 28 52 ? 196

15 16 20 28 45 70 106

What is the least number which when divided by 36 , 38 , 57 , 114 and 19 leaves the remainder 26 , 28 , 47 , 104 and 9 respectively ?

65, 72, 86, 114 ?

Is (16 - 4) - 2 = 16 - (4 - 2) ? Is there on associative property for division? Discuss with your friends. Think of (28 - 14) - 2 and 28 - (14 - 2) .

If 58 xx 74 = 27, 36 xx 28 = 19, 65 xx 86 = 33, then 29 xx 98 = ?

Explain why each of the lists above is a G.P. (iv) 18, 16.2, 14.58, 13.122 ......

28, 15 16, 25, 51, ?