Find number of seven-digit number in the form of `a b c d efg(g,f,e ,` tc. Are digits at units, tens hundreds place etc.) w here `a>e>>f >>gdot.`

Express the following statements as a linear equation in two variables. The sum of a two digit number and the number obtained by reversing the order of its digits is 121. If the digits in unit’s and ten’s place are ‘x’ and ‘y’ respectively.

Find the number of permutations of letters a ,b ,c ,d ,e ,f,g taken all together if neither beg nor cad pattern appear.

Total number of six-digit numbers that can be formed having the property that every succeeding digit is greater than the preceding digit is equal to a. ^9C_3 b. ^10 C_3 c. ^9p_3 d. ^10 p_3

The number of different seven-digit numbers that can be written using only the three digits 1, 2, and 3 with the condition that the digit 2 occurs twice in each number is a. 2P_5 2^5 b. 7C_2 2^5 c. 7C_2 5^2 d. none of these

Find the total number of nine-digit numbers that can be formed using the digits 2, 2, 3, 3, 5, 5, 8, 8, 8 so that the odd digit occupy the even places.

The total number of six-digit natural numbers that can be made with the digits 1, 2, 3, 4, if all digits are to appear in the same number at least once is a. 1560 b. 840 c. 1080 d. 480

If a ,b ,c ,d ,e ,f are A.M.s between 2 and 12, then find the sum a+b+c+d+e+fdot

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is a. 4^5-5! b. 505 c. 600 d. none of these

A two digit number and the number with digits interchanged add up to 143 . In the given number the digit in unit's place is 3 more than the digit in the ten's place . Find the original number.