Question

The mean of 100 numbers is 45. The mean of the last 99 numbers is 44. The first number is. Please give step by step answer ​

Answer 1

Answer:

144

Step-by-step explanation:

Sum of 100 nos.=100*45=4500

Sum of 99 nos.=99*44=4356

So, the first no. is 4500 - 4356 = 144