NAB Logical Reasoning 2

Question 1

If all bank managers are accountants and some accountants are auditors, which conclusion must be true?

Accepted Answer

Some bank managers may be auditors

Answer

The premise only guarantees that some accountants are auditors, so bank managers who are accountants may or may not be auditors.

Question 2

What is the next number in the sequence: 3, 7, 15, 31, 63, ___?

Accepted Answer

127

Answer

Each term is obtained by multiplying the previous term by 2 and adding 1 (63 × 2 + 1 = 127).

Question 3

If an interest rate doubles every 5 years and is currently 4%, what will it be in 10 years?

Accepted Answer

16%

Answer

After 5 years the rate doubles to 8%, and after another 5 years it doubles again to 16%.

Question 4

Pen is to Write as Calculator is to ___.

Accepted Answer

Compute

Answer

A pen's function is to write; a calculator's function is to compute.

Question 5

All honest employees are trusted. John is not trusted. Which conclusion must follow?

Accepted Answer

John is dishonest

Answer

By the contrapositive, if John is not trusted, he cannot be an honest employee, so John is dishonest.

(NAB) National Australia Bank Practice Test