Elitmus
Exam
Numerical Ability
Area and Volume
p be a no. in base N system whose all digits are 1. converting p in decimal we get z. the possible value of z is(are)?
a.21
b.12
Read Solution (Total 5)
-
- both a and b
(111) = 16+4+ 1 = (21)
4 10
(1111) = 81+27+9+3+1 = (121)
3 10
so both a and b.
But I did it wrong in exam :( - 10 years agoHelpfull: Yes(3) No(0)
- both a and b
- 10 years agoHelpfull: Yes(2) No(0)
- a. 21
b. 121
only 121 will be possible - 10 years agoHelpfull: Yes(2) No(0)
- 111 in base 4 gives 21 as well
- 10 years agoHelpfull: Yes(0) No(0)
- et cost of brown pencil be Rs. x and that of white pencil be Rs. (x+1)
c.p of white pencil+c.p of brown pencil=100
=>10(x+1)+8x=100
=>18x=90
so,x=5
white pencil=10(x+1)=60
brown pencil=8x=40
- 10 years agoHelpfull: Yes(0) No(2)
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