Question

Find the number wrong term 11,42,39,164,525,421,749

Answer 1

Answer:

so 39 wrong number in the following term.

Answer 2

Answer:

The wrong number is $421$

Step-by-step explanation:

In the rest of number, one digit is the square of the other

1$1^{2}=1== > 11 \\2^{2}=4== > 42\\ 3^{2}=9== > 39\\ 4^{2} =16== > 164\\5^{2} =25== > 525\\6^{2}=36\\ 7^{2}=49== > 749$

The wrong number is $421$