If (7<sup>a</sup>) (7<sup>b</sup>)= 7<sup>c</sup>/7<sup>d</sup>, what is d in terms of a, b, and c?

1. If (7^a) (7^b)= 7^c/7^d, what is d in terms of a, b, and c?

[BKB Senior Officer-2012 : 2012]

1. c/ab

2. c -a - b

3. a + b - c

4. c - ab

Answer

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