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How to force numeric output

• To: mathgroup at smc.vnet.net
• Subject: [mg115576] How to force numeric output
• From: KenR <ramsey2879 at msn.com>
• Date: Sat, 15 Jan 2011 04:45:05 -0500 (EST)

I am new to Mathematica and cant seem to get it to give a numeric
answer to

 input    y = 5; x = floor[sqrt[y+1.0]]; x.

instead of a numeric it gives "out floor[sqrt[6.0]]"

what am I doing wrong?

I have Mathematica 8.0

Thankyou, Kenneth Ramsey