201. The strength of a school increases and decreases every alternate year by 15%. If it started with an increase in 2012, then the strength of the school in the beginning of 2015, as compared to that in 2012, had (correct to two decimal places):

  • (A) Decreased by 12.41%
  • (B) Increased by 12.41 %
  • (C) Decreased by 13.85 %
  • (D) Increased by 13.85 %

202. In an election, the winner was supported by 46% of all the voters in the list, and he got 410 votes more than his only rival. 10% of the voters on the voters’ list did not cast their votes, and 60 voters cast their ballot papers blank. How many voters were on the list?

  • (A) 17445
  • (B) 16550
  • (C) 17500
  • (D) 15750

203. Two circles with centers B and D have radii DA = 8 cm and BC = x cm, respectively. AC is tangent to both circles. If DB and AC intersect the point E, AE = 12 cm and EC = 18 cm, then find the value of x (in cm).

  • (A) 13
  • (B) 10
  • (C) 11
  • (D) 12

204. Find the fourth proportion to 10, 12, and 15.

  • (A) 16
  • (B) 20
  • (C) 18
  • (D) 22

205. Simplify 8.2 + 2.6 + 3.2 - 4.5 ÷ 0.9 × 1.2.

  • (A) 8
  • (B) 6
  • (C) 4
  • (D) 10

206. Aarav owns a watch worth ₹10,000. He sells it to Bhavin at a profit of 15%. After some days, Bhavin sells it back to Aarav at 15% loss. Find the percentage profit or loss faced by Aarav.

  • (A) 17.25% loss
  • (B) 17.25% profit
  • (C) 18.25% profit
  • (D) 18.75% loss

207. Ashu can row 7.5 km an hour in still water. He finds that it takes four times as much time to row upstream, as it takes to row downstream. The speed of the stream is:

  • (A) 3.5 km/h
  • (B) 1.5 km/h
  • (C) 4.5 km/h
  • (D) 2.5 km/h

208. Simplify the following expression: 25 × 25 + 9 × 9 + 6 × 6 + 2 × 25 × 9 + 2 × 9 × 6 + 2 × 25 × 6

  • (A) 900
  • (B) 1200
  • (C) 1600
  • (D) 2500

209. Arvind works 4 times as fast as Suresh. If Suresh can complete a work in 20 days independently, then find the number of days in which Arvind and Suresh can together finish the work.

  • (A) 6
  • (B) 3
  • (C) 5
  • (D) 4

210. Three boys, on an average, are 25 years old, and their age are in the ratio of 3 : 5 : 7. What is the age of youngest boy?

  • (A) 12 years
  • (B) 15 years
  • (C) 21 years
  • (D) 24 years

Total Quizz:- 2541

Mathematics

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