Quantitative Aptitude - Arithmetic Ability Questions

Mohan starts to calculate sum of all odd natural number less than 83. What result does he get?

Which of the following condition is sufficient to state that triangle ABC and DEF are similar?

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?

The successive discount of 15%, 20% and 25% on an article is equivalent to the single discount of

If tan (5x ­- 10°) = cot (5y + 20°), then the value of x + y is

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

If 5 -­ x > 1 + 3x and 5 + 5x ≥ 2 + 2x; then x can take which of the following values?

Select the odd word/letters/number/number pair from the given alternatives.