यदि `1/(6!) + 1/(7!) = x/(8!)` तो x का मान ज्ञात कीजिए ।

Explanation

` 1/(6!) + 1/(7!) = x/(8!)`
`rArr x = 8! (1/(6!) + 1/(7!)) = (8!)/(6!) + (8!)/(7!)`
` = (8 xx 7 xx 6!)/(6!) + (8 xx 7!)/(7!)`
` = 56 + 8 = 64`