Question

find the missing number
15 , 20 , 30 , _ , 65

Answer 1

Answer: 45

Step-by-step explanation: 15+5=>20+10=>30+15=>45+20=>65

Add the consecutive multiples of five starting from 5,10,15 to each term starting from first term to get its successor.

Hope it helps you.

Answer 2

Answer:

The missing number in the given series is $45$.

Step-by-step explanation:

• Let us look at the first two numbers closely.
• They are $15$ and $20$ respectively.
• Here we can see that the difference between the two numbers is 5.
• Now, let us look at the next two numbers.
• They are 20 are 30.
• Here the difference between them is 10.
• Hence this pattern tells us that we have to add in the number that we are further adding to the figures given in the sequence.
• Therefore technically the next number after 30 should be:
• $30 + 15 = 45$
• This can be verified by looking at the next two numbers.
• If the difference between them is 20, it will be proved that our answer is correct.
• $65-45 = 20$
• Hence, the missing number is 45.

Link:

https://brainly.in/question/16510350

#SPJ2