fatina wants to mail three parcels to three village schools.she finds that the postal charges are rs 20.rs 28 and 36 respectively.
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Find the prime factors:
20 = 2² x 5
28 = 2² x 7
36 = 2² x 3²
Find the HCF:
HCF = 2² = 4
Answer: The smallest denomination is Rs 4.
Additional information:
Find the number of stamps that she will need to buy:
Rs 20 parcel = 20 ÷ 4 = 5 stamps
Rs 28 parcel = 28 ÷ 4 = 7 stamps
Rs 36 parcel = 36 ÷ 4 = 9 stamps
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