Elitmus
Exam
Numerical Ability
Arithmetic
35,80,143 are decimal notation of 120 in base a,b,c respectively. a,b,c are
1)airthmatic progression
2)geometric progression
3)prime number
4)c-b-a=1
Read Solution (Total 3)
-
- Arithmatic progression. becoz
35=1*a^2+2*a^1+0*a^0=a^2+2a=35 =>a=5
80=1*b^2+2*b^1+0*b^0=b^2+2b=35 =>b=8
143=1*c^2+2*c^1+0*c^0=c^2+2c=35 =>c=11 - 8 years agoHelpfull: Yes(16) No(3)
- Ans: a=5,b=8,c=11.
Hence a,b,c are in A.P. - 8 years agoHelpfull: Yes(1) No(0)
- 4
it is beac - 2 years agoHelpfull: Yes(0) No(0)
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