CogAT Quantitative Reasoning

Front

Complete the sequence: 1, 4, 9, 16, 25, ___

Back

36 (This sequence consists of perfect squares: 1^2, 2^2, 3^2, 4^2, 5^2, 6^2)

Front

Find the missing number in the pattern: 6, 12, 24, ___, 96

Back

48 (Each number is multiplied by 2, then by 2 again: 6*2=12, 12*2=24, 24*2=48, 48*2=96)

Front

What is the next number in the sequence: 3, 6, 9, 12, 15, ___?

Back

18 (This sequence increases by 3 each time: 3, 6, 9, 12, 15, 18)

Front

What is the missing number in the pattern: 5, 15, 25, ___, 45

Back

35 (This sequence increases by 10 each time: 5, 15, 25, 35, 45)

Front

Find the missing number in the pattern: 3, 6, 9, ___, 15

Back

12 (This sequence increases by 3 each time: 3, 6, 9, 12, 15)

Front

What is a sequence?

Back

A sequence is an ordered list of numbers that follow a specific pattern or rule.

Front

Define 'pattern' in mathematics.

Back

A pattern is a repeated or recurring arrangement of numbers, shapes, or other elements that follow a specific rule.

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the product of an integer multiplied by itself (e.g., 1, 4, 9, 16).

Front

Explain the concept of arithmetic sequence.

Back

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant.

Front

What is the formula for finding the nth term of an arithmetic sequence?

Back

The nth term can be found using the formula: a_n = a_1 + (n-1)d, where a_1 is the first term and d is the common difference.