Question

1. solve this number riddle:

i am an odd number.
i am less than 100.
the sum of my digits is 12.
i am a multiple of 15.
what number am i?

Explanation:

Step1: List multiples of 15 less than 100

Multiples of 15 less than 100: \(15, 30, 45, 60, 75, 90\)

Step2: Filter odd numbers

From the list, odd numbers are: \(15, 45, 75\)

Step3: Check digit sum is 12

• For 15: \(1 + 5 = 6

eq 12\)

• For 45: \(4 + 5 = 9

eq 12\)

• For 75: \(7 + 5 = 12\)

Answer:

75