Exams

The mean of 20 observations is 19. One more observation is included and the new mean becomes 20. The 21st observation is

Deepak sells all his goods available in his shop at the cost price, but he cheats his customer and gives 20% less goods as he should give. Find his % profit.

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Banter

What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

In India, Air Force Day is celebrated on

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a
sentence is free from error, select 'No Error'.

Each boy was given (A)/a toy as a parting gift,(B)/which made them happy.(C)/No error(D)

The ratio of incomes of P and Q is 5 : 3. Ratio of income of Q and R is 5 : 2. If one-fourth of P’s income is Rs 500 more than the R’s income, then what is the income (in Rs) of Q?

Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.