Campus
Maths Puzzle
Numerical Ability
Number System
There are 5 distinct integers a,b,c,d,e in ascending order.
(68-a)(68-b)(68-c)(68-d)(68-e)=725.
then what is the value of a+b+c+d?
Read Solution (Total 8)
-
- Sorry the previous approach was wrong
725 = -5*-1*1*5*29
so we can write,
68-e = -5
=> e = 73
68-d = -1
=> d = 69
68-c = 1
=> c = 67
68 - b = 5
=> b = 63
68-a= 29
=> a = 39
so a+b+c+d = 39+63+67+69 = 238 - 10 years agoHelpfull: Yes(9) No(3)
- previous answer is wrong
725 = -58-1*1*5*29
so we can write,
68-e = -5
=> e = 73
68-d = -1
=> d = 69
68-c = 1
=> c = 67
68 - b = 5
=> b = 63
68-a= 29
=> a = 39
so a+b+c+d = 39+63+67+69 = 238
- 10 years agoHelpfull: Yes(8) No(3)
- lcm of 725 = 5*5*29
so we can also write 725 as a distinct multiples of numbers as
725 = -5*-1*1*5*29
so as a,b,c,d,e are in ascending order
=> a=-5, b=-1, c=1, d=5, e=29
a+b+c+d = -5-1+1+5 = 0
so the answer is 0
- 10 years agoHelpfull: Yes(4) No(15)
- 725=5*5*29 or 725=5*-5*-1*1*29
therefore (68-63)*(68-73)*(68-67)*(68-69)*(68-69)
a=63 b=73 c=67 d=69 e=39
a+b+c+d+e=311
311-63=248
311-73=238
311-67=244
311-69=242
311-39=272
ans would be one among 248, 238, 244, 242, 272 - 10 years agoHelpfull: Yes(2) No(1)
- not possible
- 10 years agoHelpfull: Yes(1) No(2)
- 725 = -5*-1*1*5*29
so we can write,
68-a = -5
=> a = 73
68-b = -1
=> b = 69
68-c = 1
=> c = 67
68 - d = 5
=> d = 63
68-e= 29
=> e = 39
so a+b+c+d = 73+69+67+63= 272 - 10 years agoHelpfull: Yes(1) No(4)
- 67+67+67+43=244
- 10 years agoHelpfull: Yes(0) No(3)
- 725=5*5*29=>
now let us see the order:
case1: 5*5*29*1*1:it is not possible because (ab=63
68-c=1=>c=67
68-d=-1=>d=69
68-e=-5=>e=73
(a - 10 years agoHelpfull: Yes(0) No(2)
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