Wipro
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Numerical Ability
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Show that the sum of (m + n)th and (m – n)th terms of an A.P. is equal to twice the mth term
Read Solution (Total 1)
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- take tn=a+(n-1)d
then in l.h.s
a+((m+n)-1)d + a+((m-n)-1)d=2(a+(m-1)d)......(1)
then in rhs by condition
2(a+(m-1)d)......(2)
both are equal
- 11 years agoHelpfull: Yes(5) No(0)
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