Q. What is the tenth number in the pattem below?1,3,4,12,13,39,40
Identify Pattern: Identify the pattern in the sequence.Looking at the sequence, we can see that it alternates between multiplying by 3 and adding 1.1(×3)→3(+1)→4(×3)→12(+1)→13(×3)→39(+1)→40
Continue Pattern: Continue the pattern to find the eighth number.Since the seventh number is 40 and the pattern is to add 1 after multiplying by 3, we add 1 to 40.40+1=41The eighth number is 41.
Find Eighth Number: Find the ninth number by multiplying the eighth number by 3. 41(×3)→41×3=123The ninth number is 123.
Find Ninth Number: Find the tenth number by adding 1 to the ninth number.123+1=124The tenth number is 124.