What is the total number of two-digit positive integers where the tens digit exceeds 5 and the units digit is below 5?

Answer Choices

Correct answer marked below

Correct

See the full step-by-step explanation

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Track your performance and improve

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Start for free Sign in

Explanation

Preview

Official Explanation

Official

To find the number of two-digit positive integers, we first consider the tens digit, which must be greater than 5. The possible values for the tens digit are 6, 7, 8, and 9, giving us 4 options. Next, for the units digit, which must be less than 5, the…

Read the full explanation

Create free account Sign in

Comments

BoiboiApr 14, 2024

thanks for taking time to upload it!

PoojaDec 12, 2024

thanks

What this question tests

What it tests

Whether you can count arrangements and selections correctly — permutations vs. combinations.

Common trap

Overcounting: treating a selection as ordered when order does not matter, or forgetting to divide by duplicates.