kesho

the OA is A.

http://img16.imageshack.us/img16/170/328200985242pm.png also solve it

also solve it Q. If n is an integer and 99

Got It! Thanks!

Q. Mr. jones gave a copy of his chili recipe to exactly 3 friends who each gave a copy of the recipe to exactly 5 other nonmutual friends.What is the total number of people who had the recipe?

Q. Given a sequence a1, a2........ an. If a1 = 25 & in the sequence if every number is '-2' times the preceding number, the find a100

Q. A man buys ‘W’kgs of dog food once in a week and ‘x’kgs of the food is given to each dog twice a day.what is the Number of dogs?

thanks goldust! you are always helpful.

Q. Mr. jones gave a copy of his chili recipe to exactly 3 friends who each gave a copy of the recipe to exactly 5 other nonmutual friends.What is the total number of people who had the recipe?

http://img10.imageshack.us/img10/3271/clipimage003r.jpg also help me with this one

http://img91.imageshack.us/img91/3023/327200984015pm.png

great JOB. also try it col a 100,210*90,021 col b 10,021*90,210

Q1. col a sqrt(79*80*81*82) col b 6400 Q2. col a 1/(1-.03) col b 1.03

Q. There are 27 sudents on the college debate team. what is the probability that at least 3 of them have their birthdays in the same months? Please explain it elaborately.

Thanks. Understood.