To solve for the first question, all it is asking is if you were to perform the operation, will the final result be less than the exponential base of the question.

For example
2^3 = 8, 8 is not less than 2.
So the solution would be B. Since (5/6)^2 = 25/36 and 5/6 which is 0.8333 is more than 0.69444, thus the value is less than the base.

To solve for number 2, all you have to do is multiply the cost of chicken meal to number of chicken meals, and the cost of the burger meals to the number of burger meals, then divide the total money for chicken meals by the total money altogether.

Chicken – 9 • 5 = 45
Burger – 15 • 6 = 90
Total money = 45 + 90 = $135.00
$45.00/$135.00 = 0.3333 • 100 = 33.3 or 33 1/3 %.

Q3. According to the order of operations BEDMAS, you would first do B. Division as it is the operation you would do first in the pair of brackets, before adding.

For Q4, you would need to perform a branching diagram to solve for the number of people chosen.

For Q5. Prime numbers are numbers that only have 2 factors, it can divide by one and itself, out of the options the only ones that are prime are 2 and 5, written in exponential form, so A.

For Q6. The solution is B. 23

For Q7. The expression is equivalent to (3.6)^4 thus is D.

For Q8. The prime numbers for 80 are 2 and 5, and thus the expression to give 80 would be D.