Explanation

Sum:

2+3+5+7+11+13+17+19=77

Correct Answer: 77

• Prime numbers are divisible only by 1 and themselves.

• 1 is not a prime number.

  
  

  Last updated by NA on 04-11-2026

Explanation

Cost Price = Rs. 44,000

Selling Price = Rs. 48,000

Profit = 48,000 − 44,000 = Rs. 4,000

Formula:

Profit % = profit cost price x 100

= 4000 44000 x 100

= 9,09 %

Last updated by NA on 04-11-2026

Explanation

Given that:

C.P=450 & S.P=495

When S.P is greater than C.P, we get Profit

Profit=S.P-C.P

Profit=495-450

Profit = 45 

Now,

Gain% = [100*Gain]/C.P

             = [100*45]/450

             = 10%

 ***

Last updated by NA on 04-11-2026

Explanation

120 men can do work = 30 days

1 man can do this work = 120 x 30 = 3600 days

80 men can do this work = 3600/80 = 45 days

Last updated by NA on 04-11-2026

Explanation

Let the price of one marker = M

Let the price of one pen = P

3M + P = 340  ...(1)

4M + 2P = 560  ...(2)

Divide equation (2) by 2:

2M + P = 280  ...(3)

Subtract equation (3) from equation (1):

(3M + P) − (2M + P) = 340 − 280

M = 60

Substitute M = 60 into equation (1):

3(60) + P = 340

180 + P = 340

P = 340 − 180

Rs. 160

Last updated on 30 Oct 2026