simplification Model Questions & Answers, Practice Test for ssc steno grade c d 2024

Question :11

${12^2-4^2}/{9^2-3^2}$=?

Answer: (c)

? = ${(12+4)(12+4)}/{(9+3)(9-3)}$=${16×8}/{12×6}$=$16/9$=$1{7/9}$

Question :12

986.23 + 7.952 + 8176.158 = ?

Answer: (c)

? = 986.23 + 7.952 + 8176.158 = 9170.340

Question :13

4895 + 364 × 0.75 – 49 = ?

Answer: (c)

? = 4895 + 364 × 0.75 – 49 = 4895 + 273 – 49 = 5119

Question :14

What is the simplified form of $9 √2 - √8 - 4√2$ ?

Answer: (a)

$9 √2 - √8 - 4 √2$

= $9 √2 - 2√2 - 4√2 = 3√2$

Question :15

If (a + b = 3), then what is the value of $(a^3 + b^3$ + 9ab)?

Answer: (a)

Given, a + b = 3

∴ $(a + b)^3 = 3^3$

⇒$a^3 + b^3$ + 3ab(a + b) = 27

⇒$a^3 + b^3$ + 9ab = 27

(∵ a + b = 3)

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