(Sample Material) India Post Payments Bank (IPPB) Study Kit "Numerical Ability - Indices and Surds"
Sample Materials of India Post Payments Bank (IPPB) Study Kit
Subject: Numerical Ability
Topic: Indices and Surds
1. If 3x+1 + 32x+1 = 270, then x is equal to
(1) 1
(2) 2
(3) 0
(4) 4
(5) None of these
2. Determine a possible value of x from the equation 5x–2 × 23x/x+1 = 4.
(1) 0
(2) 4
(3) 2
(4) 3
(5) None of these
3. The least value of 3x + 3–x is
(1) 2
(2) 1
(3) 0
(4) 2/3
(5) None of these
4. If a = –5 and b = –6, find the value of (a – b)b–a + (b – a)a–b.
(1) 1
(2) –1
(3) 0
(4) –2
(5) None of these
5. In Republic Day Parade, 6440 NCC cadets were asked to stand in rows to form a perfect square. It was found that 40 NCC cadets were left out. What was the number of NCC cadets in each row?
(1) 40
(2) 80
(3) 64
(4) 60
