Phone Number and Missing digit Trick

Trick 1: Phone Number trick

Step1: Grab a calculator (You wont be able to do this one in your head) .
Step2: Key in the first three digits of your phone number (NOT the area code-if your number is 01-123-4567, the 1st 3 digits are 123).
Step3: Multiply by 80.
Step4: Add 1.
Step5: Multiply by 250.
Step6: Add the last 3 digits of your phone number with a 0 at the end as one number
step7: Repeat step 6
step8: Subtract 250
step9: Divide number by 20
Answer: The 3 digits of your phone number
Funny Trick That results on your exact phone number!!

Trick 2: Missing digit Trick

Step1: Choose a large number of six or seven digits.
Step2: Take the sum of digits.
Step3: Subtract sum of digits from any number chosen.
Step4: Mix up the digits of resulting number.
Step5: Add 25 to it.
Step6: Cross out any one digit except zero.
step7: Tell the sum of the digits. Subtract the sum of the digits from 25.
Answer: Inorder to find out the missing digit, subtract the sum of digits from 25. The difference is the missing digit.