Number System Model Questions & Answers, Practice Test for ibps so prelims 2024 2025

Answer: (c)

H.C.F. of 403, 434 and 465 is 31.

Answer: (b)

Let the number of hens = x

∴ Number of goats = 43 – x

According to the question,

x × 2 + (43 – x) × 4 = 142

or, 2x + 172 – 4x = 142

or, 2x = 172 – 142

∴ $x = 30/2 = 15$

∴ Number of hens = 15

Answer: (b)

$√{5}/{2} – 10/{√5} + √{125} = √{5}/2 – 10/√{5} +{5√5}/1$

= ${5 – 20 +10 × 5}/{2√5} = {35√5}/10$

= 3.5 × 2.236 = 7.826

Answer: (d)

Since Dividend = Divisor × Quotient + Remainder

∴ Dividend = 9235 × 888 + 222

Thus the number = 8200902

Hence (d) is the correct choice.

Answer: (a)

Let two rational numbers be $√3$ and $√2$.

Then, $(√3 + √2)$ is an irrational number.

Let two rational numbers be $3 - √2, √2$.

∴ $(3 - √2) + √2 = 3$ (rational)

Therefore, sum of two irrational numbers may be rational or irrational.