Ms. Shruti is 45 years old and plans to retire at 60. Her life expectancy is 80 years. Ms. Suman her Financial Planner, estimates that her client will require Rs.540,000 in the first year after retirement. The inflation rate is 6% p. a. and the rate of return is 10% p. a. What will be the savings per year required in order to meet this?

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

b.

step-by-step explanation:

i just know