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Question:

A calculator has two memory buttons, A and B. Value 1 is initially stored in both memory locations.

The following sequence of steps is carried out five times:

What is the value stored in memory location A after this procedure?

Explanation:

	A	B	Step I (B + 1)	Step II (A × B)	Step III A	Step III B
Beginning	1	1
1^st time	1	1	B = 2	(1 × 2) = 2	2	2
2^nd time	2	2	B = 3	(2 × 3) = 6	6	3
3^rd time	6	3	B = 4	(6 × 4) = 24	24	4
4^th time	24	4	B = 5	(24 × 5) = 120	120	5
5^th time	120	5	B = 6	(120 × 6) = 720	720	6

Hence, option (c).

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