Explanation

 48 is the correct answer 

If one of the numbers is 72, and the greatest common divisor of the two numbers is 24, then the other number must be divisible by 24. If the least common multiple of the two numbers is 144, then the other number must be divisible by 144/72 = 2, which means that it must be even. Therefore, the other number must be an even multiple of 24. The only even multiple of 24 that is less than 72 is 48, so the other number must be 48.

Explanation

Limestone is a Sedimentary Rock, Stratified Rock, Aqueous Rock.

Limestone consists of calcium carbonate,

which has the chemical formula CaCO3.

Calcium carbonate is a chemical compound

It is a common substance found in rocks as the minerals calcite

RK11-12-22

Explanation

Total number of votes = 7500

Given that 20% of Percentage votes were invalid

 => Valid votes = 80%

 Total valid votes = 7500*(80/100)

1st candidate got 55% of the total valid votes.

Hence the 2nd candidate should have got 45% of the total valid votes

=> Valid votes that 2nd candidate got = total valid votes x (45/100)

7500*(80/100)*(45/100) = 2700

Explanation

 45 is the correct answer 

LCM(a,b) × HCF(a,b) = a × b LCM * HCF = One Number * Other Number 15 * 90 = 30 * Other number Hence, Other number = (90 * 15)/30 = 45

Explanation

Explanation

Given:

$$3 (-4 times 5 - 6)$$

1. Calculate $-4 times 5$:

   $$-4\times 5=-20$$

2. Substitute and simplify inside the parentheses

   $$-20 - 6 = -26$$

3. Now multiply by 3

   $$3 times (-26) = -78$$

Explanation

One kilogram is equal to 2.2046 pounds.

Difference Between Pound and Kilogram

Explanation

Mega is a unit prefix in metric systems of units denoting a factor of one million (106 or 1000000).

It has the unit symbol M.

It was confirmed for use in the International System of Units (SI) in 1960.

Mega comes from Ancient Greek.

Explanation

To find the intersection of sets A and B, we need to identify the elements that are common to both sets

Set A contains the elements {1, 2, 3, 6}, and set B contains the elements {2, 4, 5, 7}.

The only element that appears in both sets is 2

Thus, the intersection A ∩ B is {2}

Explanation

1. 
   

2. $$a^2 + b^2 = 25 - 12 = 13.$$