Challenger App

No.1 PSC Learning App

1M+ Downloads

Find the wrongly placed number in the series:

1,3,10,21,64,129,389,777

A21

B64

C389

D777

Answer:

C. 389

Read Explanation:

The correct pattern is x 2 + 1, x 3 + 1, x 2 + 1, x 3 + 1,..... So, 356 is wrong and must be replaced by (129 x 3 + 1) i.e. 388.


Related Questions:

Which of the following numbers will replace the question mark (?) in the given series? 9, 10, 22, 69, 280,?
What should come in place of the question mark (?) in the given series? 9 20 42 86 ? 350
What should come in place of the question mark (?) in the given series? 162 184 206 228 250 ?
താഴെ തന്നിരിക്കുന്ന ശ്രേണിയിലെ അടുത്ത സംഖ്യ ഏത്? 1, 3, 8, 19, 42, 89, ........

Instruction: Identify the assumptions that must hold for the statement to be valid, then choose the correct option.

Statement: While the world is moving towards automation, it is essential to ensure that ethical frameworks evolve alongside technological advancements to prevent misuse.

Assumptions:

I. Automation can lead to ethical dilemmas.

Il. Ethical frameworks must be updated to keep pace with technological advancements.

III. Automation will eventually replace human labor in all sectors.