`(343xx49)/(216xx16xx81)=?` `(7^5)/(6^7)` (b) `(7^5)/(6^8)` (c) `(7^4)/(6^7)` (d) `(7^6)/(6^7)` (e) None of these

(343xx49)/(216xx16xx81)=?(7^(5))/(6^(7))b*(7^(5))/(6^(8))c*(7^(6))/(6^(7))d*(7^(4))/(6^(8))

4(4)/(5)-:6(2)/(5)=?(3)/(4) (b) (5)/(7) (c) (5)/(8)(d)(7)/(11) (e) None of these

(-7)xx(-6)xx5=?

(5)/(6)-:(6)/(7)xx?-(8)/(9)-:1(3)/(5)+(3)/(4)xx3(1)/(3)=2(7)/(9)(7)/(6)(b)(6)/(7)(c)1(d) None of these

(18)^(3.5)-:(27)^(3.5)xx6^(3.5)=2^(7)3.5b.4.5c.6d.7e. none of these

(1)/(5)xx(5)/(7)div (6)/(7)=?

A fair die is tossed eight xx.The probability that a third six observed in eight throw is (7C_(10)xx5^(7))/(6^(7)) b.(7C_(2)xx5^(2))/(6^(8)) c.(7C_(2)xx5^(5))/(6^(6))d none of these

5, 16, 6, 16, 7, 16, 9 (a) 9 (b) 7 (c) 6 (d) None of these

By how much does (6)/(7/8) exceed (6/7)/(8)?6(1)/(8) (b) 6(3)/(4)(c)7(3)/(4) (d) 7(5)/(6)

A fair die is tossed eight times. The probability that a third six is observed in eight throw is (\ ^7C_(10)xx5^7)/(6^7) b. (\ ^7C_2xx5^2)/(6^8) c. (\ ^7C_2xx5^5)/(6^6) d. none of these