find x from the following :- 1/8!+3/7! =x/9!
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Answered by
4
1/8 +3/7=x/9
(7+24) / 56 = x/9
31/56= x/9
31×9 = 56x
279 =56x
x= 279 / 56
x = 4.98 approx
(7+24) / 56 = x/9
31/56= x/9
31×9 = 56x
279 =56x
x= 279 / 56
x = 4.98 approx
hellochahat17:
thank u soo much
but I think the question is related to factorials.
ok! I was not knowing the fact
Okkk
Answered by
3
Given 1/8! + 3/7! = x/9!
= 1/8 * 7 * 6 * 5 * 4 * 6 * 2 * 1 + 3/7 * 6 * 5 * 4 * 3 * 2 * 1 = x/9!
1/40320 + 3/5040 = x/9!
1/40320 + 1/1680 = x/9!
25/40320 = x/9!
x/9! = 5/8064
x/362880 = 5/8064
x = 5 * 362880/8064
x = 225.
Hope this helps!
= 1/8 * 7 * 6 * 5 * 4 * 6 * 2 * 1 + 3/7 * 6 * 5 * 4 * 3 * 2 * 1 = x/9!
1/40320 + 3/5040 = x/9!
1/40320 + 1/1680 = x/9!
25/40320 = x/9!
x/9! = 5/8064
x/362880 = 5/8064
x = 5 * 362880/8064
x = 225.
Hope this helps!
this is not the correct answer
what's the answer
What's the correct answer then Hellochahat
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