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Numerical Ability
Arithmetic
How can u get 81 using the digits 2, 3, 25, 50, 75, 100 only once using any of the arithmetic operators?
Read Solution (Total 28)
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- simple solution:
25*3+2+ ( 100/(75-50) ) = 81 - 12 years agoHelpfull: Yes(18) No(15)
- since 3^2 = 9 and 9^2 = 81,
ie , (3^2)^2 = 81
(3*3)^2 = 81
so,
[3*{(100+50-75)/25}]^2 = 81 - 12 years agoHelpfull: Yes(15) No(5)
- 3 power[[100/(((75-50)+25)]*2] =81
- 12 years agoHelpfull: Yes(7) No(3)
- ((75/(100-25-50))*3)^2 = 81
- 12 years agoHelpfull: Yes(4) No(6)
- edit:(sry i used 75 two times in my above answer)
((75/25)^(100/50))*(3^2)
- 11 years agoHelpfull: Yes(4) No(1)
- 50 + 25 + (3*2) = 81
- 11 years agoHelpfull: Yes(3) No(7)
- yes I got it.
100/25=4
4+75=79
79+2=81 - 11 years agoHelpfull: Yes(3) No(8)
- 100-50-(2x25)+75+3!
- 11 years agoHelpfull: Yes(1) No(2)
- 100-(25-(75*2)/50)-3)
Using BODMAS...
=>100-(25-(150/50)-3)
=>100-(25-3-3)
=>100-(25-6)
=>100-19
=>81 - 11 years agoHelpfull: Yes(1) No(0)
- 75+(100/25)+2=81
- 11 years agoHelpfull: Yes(1) No(1)
- (100/25)+(75/3)+50+2 = 81
- 11 years agoHelpfull: Yes(1) No(0)
- (75/50)*2+100-25+3
- 10 years agoHelpfull: Yes(1) No(0)
- 100+(75/25)+3-(50/2)
- 10 years agoHelpfull: Yes(1) No(0)
- 75-25+50-3^2
- 10 years agoHelpfull: Yes(1) No(0)
- Aman, Can u explain the steps or procedure?
- 12 years agoHelpfull: Yes(0) No(2)
- since 3^4=81
then 3^[(50-25+100-75)/25+2]=81
hence proved - 12 years agoHelpfull: Yes(0) No(3)
- (75+25)/100+2+3+75
- 11 years agoHelpfull: Yes(0) No(0)
- [{(3)^2}^2}]
bcoz
3^2=9
9^=81
(also it is doubtfull that each number is allowed to use more than once or not.) - 11 years agoHelpfull: Yes(0) No(0)
- Ans:
3-2*(100+50)/25+75=81
- 11 years agoHelpfull: Yes(0) No(0)
- (100/25)+2+50+(75/3)=81.
- 11 years agoHelpfull: Yes(0) No(0)
- 50+(100/75)*3+25+2
- 11 years agoHelpfull: Yes(0) No(0)
- 100/(50-25) = 4
4*3 / 2 = 6
75 + 6 = 81
- 11 years agoHelpfull: Yes(0) No(0)
- 75+3+100/50+25%2
- 11 years agoHelpfull: Yes(0) No(2)
- (100/75)*3+2+50+25
- 11 years agoHelpfull: Yes(0) No(2)
- (3*2)+75=81
- 11 years agoHelpfull: Yes(0) No(2)
- simple solution
(2*3)+75= 81
- 10 years agoHelpfull: Yes(0) No(0)
- (100+75)-(2*25+50)+3!
- 10 years agoHelpfull: Yes(0) No(0)
- There are many ways to solve this question
I solve this que. in the way.......
Thsese digits are given 2,3,25,50,75,100
step 1.- (100/75-50 ) =4
step 2 - (25 *3)=75
step 3- 2
total=4+75+2
ans = 81 - 7 years agoHelpfull: Yes(0) No(0)
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