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Answer:
10. (52)3 × 54] ÷ 57
= [52 × 3 × 54] ÷ 57 (am)n = amn
= [56 × 54] ÷ 57
= [56 + 4] ÷ 57 (am × an = am+n)
= 510 ÷ 57
= 510 − 7 (am ÷ an = am−n)
= 53
(iii) 254 ÷ 53 = (5 ×5)4 ÷ 53
= (52)4 ÷ 53
= 52 × 4 ÷ 53 (am)n = amn
= 58 ÷ 53
= 58 − 3 (am ÷ an = am−n)
= 55
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Answered by
1
Answer:
1) 3 (option no.4)
2)option 1
3)option no.1
4)option no.3
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