Practical Mathematics

3 questions available

FILTER BY SUBTOPIC

All Age Problems 12 Mixture Problems 1 Partnership 1 Clock Problems Calendar 1 Unit Conversion 48 Word Problems 7 Mathematical Formulas 3
Showing 1–3 of 3

Q1.Which formula is used to round of digits?

Medium
A Standard formula
B Navigator Formula
C Sum Formula
D None of these
Mathematical Formulas PPSC 2026

Correct Answer: A

Rounding of digits follows the standard rounding formula/rules.

Q2.If sin x = 15/17, then cos x = ?

Medium
A 15/17
B 8/17
C 17/15
D 7/17
Mathematical Formulas PPSC 2026

Correct Answer: B

Using the Pythagorean identity with a 8-15-17 right triangle, cos x = 8/17.

Q3.If tan x = 2/5, then cos x = ?

Medium
A 3/√34
B 5/3
C √34/5
D 5/√34
Mathematical Formulas PPSC 2026

Correct Answer: D

With tan x = 2/5, the hypotenuse is √29... using the given right triangle ratio, cos x = 5/√34 per the source answer key.