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27924
Math

Number cheerful

Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.    
18296
Physical

Ohm's Law

The calculator calculates the resistance in the circuit in ohms. To obtain the missing value, type two, you already know and can be used to perform the calculations.              
97038
Life

The projected increase in child

Calculator based on the sex of the baby and given parental height calculated the projected increase in the child as an adult.            
18449
Financial

Deferred pension

Calculator to the data allows you to calculate the amount of the deferred annuity. http://financial-dictionary.thefreedictionary.com/Deferred+Annuity                  
17493
Verifiers

Verifier numbers Postnet

Calculator allows you to verify the number entered Postnet.