IKMC 2027 - Grades 3-4 - Self-study SET 12 - Thematic Batch 3 Question 21

IKMC · IKMC 2027 - Grades 3-4 - Self-study SET 12 - Thematic Batch 3

Question 21

Fill in the next number: 1,3,7,15,31,63,…?

1. 127
2. 126
3. 81
4. 138
5. 36