Mensa Mensa IQ Sequence Completion 5

Question 1

What comes next in the sequence: 2, 3, 5, 7, 11, 13, ___?

Accepted Answer

17

Answer

These are consecutive prime numbers, and the next prime after 13 is 17.

Question 2

Find the next term: 5, 10, 20, 40, 80, ___?

Accepted Answer

160

Answer

Each term is multiplied by 2, so 80 × 2 = 160.

Question 3

Complete the sequence: 3, 8, 15, 24, 35, ___?

Accepted Answer

48

Answer

The pattern is n² − 1 (3=2²−1, 8=3²−1, …), so the next is 7²−1 = 48.

Question 4

What is the next letter group: AB, DE, GH, JK, ___?

Accepted Answer

MN

Answer

Each pair skips one letter of the alphabet (AB, skip C, DE, skip F, GH, skip I, JK, skip L, MN).

Question 5

Find the missing value: 2, 6, 18, 54, ___?

Accepted Answer

162

Answer

Each term is multiplied by 3, so 54 × 3 = 162.

Mensa Practice Test