# Waecmaths

Title waecmaths question
Question 5

If ${{U}_{n}}=n({{n}^{2}}+1)$ evaluate U5U4

Question 48

Find the number of terms in the Arithmetic Progression (A.P) 2, –9, –20, …. –141

Question 5

The nth term of a sequence is ${{T}_{n}}=5+{{(n-1)}^{2}}$. Evaluate ${{T}_{4}}-{{T}_{6}}$

Question 30

The nth term of the sequence  –2, 4, –8, 16,…. Is given by

Question 44

Find the next three terms of the sequence: 0, 1, 2, 3, 5, 8, ….

Question 39

Find the  nth tem of the sequence 5, 10 , 20, 40, 80,…

Question 5

Find the 7th term of the sequence 2, 5, 10, 17, 26, _, _, _

Question 25

A sequence is given 2 ½ , 5, 7½….. if the nth term is 25. Find n