Question
If  x = 19 , find x 5 - 20  x 4
+ 20  x 3 - 20x 2 + 20x  - 20 = ?Solution

‘A’ alone can complete a work in 40 days while ‘A’ and ‘B’ together can complete the same work in 30 days. How much ...
Ravi and Suresh can finish a task alone in 72 days and 96 days respectively. If both work together and earn Rs. 8,400 in total, how much does Ravi rece...
‘R’ and ‘S’ together can finish a work in 25 days. If ‘R’ increases his efficiency by 60% and ‘S’ decreases his efficiency by 20%, then...
‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 30 hours. If ‘B’ completed the rest o...
Ananya and Riya can complete a task in 20 hours and 40 hours respectively. Ananya works alone for 10 hours and then Riya finishes the remaining task. Ho...
A, B and C can complete a work in 10, 20 and 15 days respectively. A left the work 3 days before the work was completed and B left 1 days after A had le...
'K' and 'L' together can complete a work in 24 days. They started working together but after 16 days, 'L' left and remaining work was completed by 'K' a...
'A' is 40% less productive compared to 'B', who is 25% more productive than 'C'. Together, they can finish a task in 45 days. After 'B' and 'C' have col...
‘A’ and ‘B’ can complete a certain work in 13 days and 26 days, respectively. They started working together and worked till completion of the wo...
Working 10 hours a day, Jagan can complete a work in 12 days while working 8 hours a day, Magan can complete the same work in 9 days. If Jagan and Magan...