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If k is a positive two-digit integer, what is the tens digit of k?
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03 May 2016, 08:15
03 May 2016, 08:15
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If k is a positive two-digit integer, what is the tens digit of k?
1) The sum of the tens digit of k and the units digit of k is 5.
2) The tens digit of k + 6 is 3.
1) The sum of the tens digit of k and the units digit of k is 5.
2) The tens digit of k + 6 is 3.
Re: If k is a positive two-digit integer, what is the tens digit of k?
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03 May 2016, 08:48
03 May 2016, 08:48
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Sallyzodiac
If k is a positive two-digit integer, what is the tens digit of k?
1) The sum of the tens digit of k and the units digit of k is 5.
2) The tens digit of k + 6 is 3.
1) The sum of the tens digit of k and the units digit of k is 5.
2) The tens digit of k + 6 is 3.
hi,
1) The sum of the tens digit of k and the units digit of k is 5.
the tens digit could be 5 as in 50, 4 as in 41, 3 as in 32, 2 as in 23 and 1 as in 14..
different values possible
Insuff
2) The tens digit of k + 6 is 3
if k is between 24 and 33, both inclusive, k + 6 will have 3 as tens digit..
so possible value of k is 2 and 3..
combined..
there are two values of k possible with tens digit as 2 and 3 - 23 and 32..
But ONLY 32 +6 will give tens digit as 3, 23 +6 = 29 and hence it has 2 as tens digit..
C
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If k is a positive two-digit integer, what is the tens digit of k?
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23 Jul 2016, 10:41
23 Jul 2016, 10:41
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shriraj93
I am bit confused here. lets assume x and y are tens, and unit digit of K. i.e k =xy
1) The sum of the tens digit of k and the units digit of k is 5.
x+y=5
not enough.
2) The tens digit of k + 6 is 3.
then according to this statement it should be x+6=3 cause x is tens digit.
but this is not possible so answer is E.
Help me to understand the second statement. I am strugling with these kind of senteses.
1) The sum of the tens digit of k and the units digit of k is 5.
x+y=5
not enough.
2) The tens digit of k + 6 is 3.
then according to this statement it should be x+6=3 cause x is tens digit.
but this is not possible so answer is E.
Help me to understand the second statement. I am strugling with these kind of senteses.
you added 6 to the tens digit directly !!
The question says K+6
and k = say 10a+b
from statement 1
a+b=5
possible cases
14
41
23
32
50
from statement 2
pick any of these cases and add 6 to it , this should give tens digit as 3
the only possible value , K =32
as 32 + 6 =38 where tens digit is 3
Therefore C
