Answer:
15
Step-by-step explanation:
To get the next number you have to subtract by 9, 51-9=42, 42-9=33, 33-9=24, and so 24-9=15. The pattern is n-9 (n=previous number) and the answer is 15
Answer:
D
Step-by-step explanation:
i = √-1 , as number inside a √ cannot be a negative number, i is an imaginary number
2 + √-36
= 2 + √(36×-1)
= 2 + 6i, d
Answer:
im sorry if this is wrong but i think number 4
Step-by-step explanation:
Let the three person be represented by X, Y and Z.
X can do 1/6 of the job in 1 day
Y can do 1/2 of the job in 1 day and
Z can do 1/3 of the job in 1 day
Together, these 3 people will do: 1/6 + 1/2 + 1/3 = 1 of the job in one day
Thus, the three people will do the job in one day.
The correct option is A
