Question

given
68. Find the Odd one out from
options :
(1) 171 (2) 131
(3) 161 (4) 181​

Answer 1

131

explanation :

171= 1+7+1= 9

131= 1+3+1=5

161= 1+6+1=8

181= 1+8+1= 10

all are divisible except 5. So 131 is right.

Answer 2

Answer:

131

Step-by-step explanation:

Method 1:

Here we need to find the odd one from the given options.

The logic here applied is as follows

171 = 1 + 7 + 1 = 9

131 = 1 + 3 + 1 = 5

161 = 1 + 6 + 1 = 8

181 = 1 + 8 + 1 = 10

By arranging the answers in decreasing order we have,

10, 9, 8, *5

We observe that 5 is not the correct order. Hence the odd one is 131.

Method 2:

If we carefully observe the middle digit of the given numbers,

we can find out that the order of the numbers in decreasing order is

181, 171, 161, *131

The next number after 161 should be 151 but here it is 131. Thus 131 is the odd one out.