Quantitative Aptitude - Arithmetic Ability Questions

If R019 is divisible by 11, find the value of the smallest natural number R?

If Reena sold 12 mobile phones for Rs. 1,88,160 which cost Rs. 14,056 per phone, what was the total profit made by her?

Which of the following is NOT prime number?

What sum will produce the same interest in 9 years at the rate 8% simple interest as Rs. 800 producein 3 years at 9/2% per annum?

Z’s present age is 55 years. If 11 years ago, C’s age was 1/11 of Z’s age, then after how many years C’s age will become 37 years?

In a triangle PQR, ∠Q = 90°. If PQ = 12 cm and QR = 5 cm, then what is the radius (in cm) of the circum circle of the triangle?

Find a two digit number which is exactly three times the product of its digits?

Select the odd number from the given alternatives.