How we will do question no.24
 

(0.000064)54 × (0.04)54= (0.000064 × 0.04)54                                         [ am × bm = (a × b)m]= ((0.2)6 × (0.2)2)54= ((0.2)8)54                                                             [ am × an = am+n]= (0.2)10                                                                 [ (am)n = amn]= (210)10 = 210. 10-10                                        [ (ab)m = ambm, 1xa = x-a]

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dont no...
pls do tell the ans after u get it...
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