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thanks.missed out on typing half the q.
if a,b r two prime numbers then a raised to pwer b is evn,odd always?

by drnt

Wed Aug 19, 2009 12:14 am
Forum: Problem Solving
Topic: prime numbers
Replies: 3
Views: 1635

prime numbers

which prime number can be expressed as sum of two other prime numbers

by drnt

Tue Aug 18, 2009 11:19 pm
Forum: Problem Solving
Topic: prime numbers
Replies: 3
Views: 1635

ratio and proportn

a man has to build a house in 60days for whichhe has 45men.aafter 40days he found it gtn delayed so got 30 more men.he finished job 5 days ahead of schedule.
how many days hwould he hve been behind had he not employd additinl men?

by drnt

Fri Aug 14, 2009 2:36 am
Forum: Problem Solving
Topic: ratio and proportn
Replies: 1
Views: 1195

ratio and proportin

a garrison has food for22400 mean for 3 weeks.how many men should go for food to last 7 days
please explain

by drnt

Fri Aug 14, 2009 2:34 am
Forum: Problem Solving
Topic: ratio and proportin
Replies: 1
Views: 2356