Advertisements
Advertisements
प्रश्न
Find the number of dots in the tenth figure of the following pattern.
Advertisements
उत्तर
The number of dots given is 1, 3, 6, 10, 15 ...
| Pattern | Number of dots |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
1st number = 1
2nd number = 1 + 2 = 3
3rd number = 3 + 3 = 6
4th number = 6 + 4 = 10
5th number = 10 + 5 = 15
6th number will be 15 + 6 = 21
7th number will be 21 + 7 = 28
8th number will be 28 + 8 = 36
9th number will be 36 + 9 = 45
10th number will be 45 + 10 = 55
Number of dots in the 10th figure = 55
APPEARS IN
संबंधित प्रश्न
Find the number of dots in the tenth figure of the following pattern.
Count the number of squares in the following figure?
Fill in the boxes 1, 2 and 3
Solve 3 × 3 magic square using the numbers from 1 to 9. So that the sum is 15 both horizontally and vertically.
Complete the following 4 × 4 Sudoku by using the numbers 1, 2, 3, 4
Can you find the mistake? Explain
ABC, ACB, BCA, BAA, CAB, CBA
The following information shows the grades of science and maths of 30 students of class 5.
Answer the following question.
a. How many students got equal grades in both subjects.
b. How many students got a higher grade in science than in maths?
c. Which was the most common grade in science?
Write all possible three digit numbers that can be formed without repeating these numbers? how many numbers can be formed?
Kavin has four cards 
What is the largest 4-digit odd number that can be made without repeating the numbers?
There are 6 sprinters A1 A2 A3 A4 A5 A6 (an athlete who runs fast in short race). List out the possible combinations that they win the 3 medals gold, silver and bronze
