Answer:
Step-by-step explanation:
Given that,
3^- 1 + 7^-1 + 8^-1 (" ^ " this symbol means " to the power of " )
= 1/3 + 1/7 + 1/8 (∵ a^- m = 1 / a ^m )
= ( 56 + 24 + 21 ) / 168 (∵ lcm of 3, 7 and 8 is 168 )
= 101 / 168
∴ Option ( d ) 101 / 168 is correct.
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Answers & Comments
Answer:
Step-by-step explanation:
Given that,
3^- 1 + 7^-1 + 8^-1 (" ^ " this symbol means " to the power of " )
= 1/3 + 1/7 + 1/8 (∵ a^- m = 1 / a ^m )
= ( 56 + 24 + 21 ) / 168 (∵ lcm of 3, 7 and 8 is 168 )
= 101 / 168
∴ Option ( d ) 101 / 168 is correct.