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Rishi Sen Sarma from DPS Megacity, Gurgaon

Subject :IMO Class : Class 5

The number of prime factors of 20 are ____.

A 1
B 2
C 4
D 3

it is 4

Ans 1:

virat varshney from Pawna International School , HATHRAS

Aadhya Kancharla from Sentia Global School, Hyderabad