In the number series 4,10,23,50,104,216,439 the wrong number is

• 10

• 23

• 104

• 104

A dealer buys an article for Rs. 380.00. What price should he mark so that after allowing a discount of 5% he still makes a profit of 25% on the article?

• Rs. 500

• Rs. 475

• Rs. 95

• Rs. 95

The sum of two numbers is 2490. If 6.5% of one number is equal to 8.5% of the other, the numbers are

• 1411 and 1079

• 1412 and 1080

• 1141 and 1709

• 1141 and 1709

Diagonals of a rhombus are 1 meter and 1.5 meter in lengths. The area of the rhombus is

• 0.75 m2

• 0.45 m2

• 0.78 m2

• 0.78 m2

Out of the total income, X spends 20% on house rent and 70% of the remaining amount on household expenditure. If X saves Rs. 1800, the total income is

• Rs. 8000

• Rs. 9500

• Rs. 7500

• Rs. 7500

The price of 2 trousers and 4 shirts is Rs. 1,600. With the same amount one can buy 1 trouser and 6 shirts. If one wants to buy 12 shirts, he has to pay

• Rs. 2400

• Rs. 4800

• Rs. 1200

• Rs. 1200

An angle in a semi circle is

• π

• n/4

• n/2

• n/2

In a factory, the production of scooters rose to 48400 from 40000 in 2 years. The rate of growth per annum is

• 20%

• 10%

• 30%

• 30%

If x= (3/2)² (2/3)^-4 the value of x^-2 is

• (2/3)¹²
  

• (3/2)¹² 

• (6/2)^-12

• (6/2)^-12

120 men had food provision for 200 days. After 5 days, 30 men died of an epidemic. The food will last for further

• 280 days

• 260 days

• 290 days

• 290 days