A.  60

B.  64

C.  72

D.  70

1
Correct Answer :
72
Explanation :

The sequence is 1 * 2, 2 * 3, 3 * 4, 4 * 5, 5 * 6, 6 * 7, 7 * 8.
.'. Missing number = 8 * 9 = 72.


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