Question

Swapnesh wants to mail three parcels to three village schools. He finds that the postal charges are Rs 42, Rs 63 and Rs 294. He wants to buy stamps only of one denomination. Find the greatest denomination of stamps he must buy to mail the three parcels.​

Answer 1

Answer:

SO HERE WE GET THAT WE NEED TO FIND OUT THE HCF , SO WE WILL FIND THE HCF.

Step-by-step explanation:

42 = 2×3×7

63 = 3×3×7

294 = 2×3×7×7

THIS MEANS THAT THE GREATEST DENOMINATION HE MUST BUY TO MAIL THE THREE PARCELS IS

=> 21

THANK YOU .