Write the following in the exponential form:
`(a) b times b times b times...10` times
`(b) y times y times...15` times
` (c) 9times a times a times a times b times b times b times b times b`
`(d) 18timesxtimesxtimesytimesytimesy`

a times a times a times b times b times c times c times c times c times c

Evaluate : 13 times 13 times 13 times a times a times a times a times a times b times b times b times b

Evaluate : a times a times a times b times b times c times c times c times c

Evaluate : 8 times b times b times b times a times a times a times a

Evaluate : b times b times b times b

Express the following in exponential form: (i) "6 times 6times6 times 6 (ii) t times t (iii) b times b times b times b times b times b (iv) 5 times 5times7 times 7times7 (v) "2 times 2times a times a (vi) a times a times a times c times c times c times c times d times 1

Evaluate : [ ( a times b ) times ( b times c ) ( b times c ) times ( c times a ) ( c times a ) times ( a times b ) ]

Evaluate : a times b times a times b times c times c times c

Evaluate : a^2 times a^4 times b^5 times c^2 times b^2 times c^5

Evaluate : ( c )   x times x times x times x times a times a times b times b times b ( d ) ( -2 ) times ( -2 ) times ( -2 ) times ( -2 ) times a times a times a