Answer:
Answered in Python
for i in range(21):
for j in range(i):
print(i, end=' ')
print(" ")
Explanation:
This iteration iterates from 1 to 20
for i in range(21):
This iteration iterates from 1 to current number
for j in range(i):
This prints the current number in the a number of times equal to itself
print(i, end=' ')
This enables printing on new line
print(" ")
