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Q: In a two-digit number the first digit is 5 less than the second digit. The number itself is three times the sum of its digits. What is the number?

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The second three digits in a phone number refer to an exchange. An exchange includes several thousand people or phones.

If you have a check, your account number is at the bottom. It's the second number in this set of three numbers. The first (about 9 digits) is the bank's identification number, the second is your account number (about 13 digits) and the third is the check number.

Not necessarily. Consider 444. The digits are not different. The first and second digits are not multiples of 3 The first digit is not greater than the second digit. In spite of all that, 444 is a 3-digit number

It is raised to the second power

Yes the number is raised to the second power

you just carry the first number and add 5 to the second number

first step;group the digits into two. second step ;think of a number that when you multiplied by itself,the answer is smaller than the first group of a digits; third step ; multipied your answer by 20', in short, this can be done by trial and error method

Count the number of digits after the decimal point in the first number being multiplied. Count the number of digits after the decimal point in the second number being multiplied. Add the two numbers. This is the number of digits after the decimal point in the answer. But make sure that any trailing 0s are included. To calulate 0.42 * 3.451: 41*3451 = 144942 Digits after point in first number = 2 Digits after point in second number = 3 2 + 3 = 5 So digits after point in answer = 5 So answer = 1.44942 But To calulate 0.42 * 3.45: 42*345 = 14490 <<< it is vital that the last 0 here is kept till the last stage. Digits after point in first number = 2 Digits after point in second number = 2 2 + 2 = 4 So digits after point in answer = 4 So answer = 1.4490 = 1.449

"The square" or "second power".

A number raised to the second power is a number times itself. This can also be stated as a number squared.

There are 10 digits from which the first number can be selected, 10 digits from which the second number can be chosen and 10 from which the third number can be picked. This gives you a total number of combinations of 10 x 10 x 10 = 1000.

Multiply it by itself.

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