Find the number
A sequence follows this pattern:
3, 6, 11, 18, 27, ? , 51
What is the missing number?
A box of biscuits
A box of biscuits contains 36 biscuits. 20 biscuits have foil wrappers. 15 are chocolate biscuits with foil wrappers. If 9 are not chocolate and do not have a foil wrapper, then how many chocolate biscuits are there?
The differences between consecutive terms are:
ReplyDelete3, 5, 7, 9, 11, 13 (an increasing sequence of odd numbers).
The missing number is:
27 + 11 = 38.