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if a,b,c,d,e are distinct numbers if(75-a)(75-b)(75-c)(75-d)(75-e)=2299 then a+b+c+d=?
Read Solution (Total 9)
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- 2299 = 11×11×19×1×1=11× −11×19× −1×1=
Two of the terms in the given expression should equal to 1. As all the digits are distinct, two of the terms should be negative.
One possible solution = (75 - 64)(75 - 56)(75 - 86)(75 - 74)(75 - 76)
Then a + b + c + d + e = 64 + 56 + 86 + 74 + 76 = 356
But as the sum of only 4 terms was asked, we have to subtract one term.
So given answer can be one of 292, 306, 270, 282, 280 - 11 years agoHelpfull: Yes(32) No(1)
- 2299 can be written as 19*121=19*11*11=19*11*(-11)*(-1)*1
now 75-a*75-b*75-c*75-d*75-e
equating corresponding values we get a=56,b=64,c=86,d=76,e=74...on adding we get 356....this is procedure... not sure of calculation - 11 years agoHelpfull: Yes(10) No(1)
- factors of 2299 are 11, 19, 1,-1,-11,-19 so a+b+c+d+e=86+76+74+64+56=356
take any 4 of 5 and you will get the answer - 11 years agoHelpfull: Yes(3) No(0)
- ans=256
64+64+56+75 - 11 years agoHelpfull: Yes(0) No(1)
- ans = 334
- 11 years agoHelpfull: Yes(0) No(3)
- since
2299=19*11*11
we can write
19*11*11*(-1)*(-1)
compare with (75-a)*(75-b)*(75-c)*(75-d)*(75-e)
we get
a=56,b=64,c=64,d=76,e=76
hence
a+b+c+d=56+64+64+76=260
tell me is it right - 11 years agoHelpfull: Yes(0) No(3)
- @Dipak ..can you explain me that why are u putting -ve sign before 11 and 1 can't we write it only 11 *1
- 11 years agoHelpfull: Yes(0) No(1)
- 258
74+64+64+56 - 11 years agoHelpfull: Yes(0) No(2)
- 75 - 64)(75 - 56)(75 - 86)(75 - 74)(75 - 76)
Then a + b + c + d + e = 64 + 56 + 86 + 74 + 76
we have only four terms so these any one may be the answer 292, 306, 270, 282, 280
- 10 years agoHelpfull: Yes(0) No(1)
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