Number series (find the wrong term): 196, 169, 144, 121, 101

Introduction / Context:
This series plainly uses perfect squares in descending order. One term breaks the sequence by not being a perfect square. Spotting the incorrect value is straightforward if you recall common squares.

Given Data / Assumptions:

• Series: 196, 169, 144, 121, 101.
• Expect consecutive square numbers in reverse.

Concept / Approach:
Match each term to a perfect square: 14^2, 13^2, 12^2, 11^2, 10^2. The final term should be 100 (10^2), not 101.

Step-by-Step Solution:
196 = 14^2.169 = 13^2.144 = 12^2.121 = 11^2.Expected next = 10^2 = 100, but given value is 101 → incorrect.

Verification / Alternative check:
Replacing 101 with 100 yields a perfect countdown of consecutive integer squares: 14^2, 13^2, 12^2, 11^2, 10^2.

Why Other Options Are Wrong:

• 196, 169, 144, 121 are exact squares and belong to the pattern.

Common Pitfalls:

• Mistaking 101 as prime and overlooking that the rule is about squares, not primality.

Final Answer:
101