1
JEE Main 2021 (Online) 27th August Morning Shift
Numerical
+4
-1
Change Language
A number is called a palindrome if it reads the same backward as well as forward. For example 285582 is a six digit palindrome. The number of six digit palindromes, which are divisible by 55, is ____________.
Your input ____
2
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
Change Language
If $${}^1{P_1} + 2.{}^2{P_2} + 3.{}^3{P_3} + .... + 15.{}^{15}{P_{15}} = {}^q{P_r} - s,0 \le s \le 1$$, then $${}^{q + s}{C_{r - s}}$$ is equal to ______________.
Your input ____
3
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
Change Language
The number of three-digit even numbers, formed by the digits 0, 1, 3, 4, 6, 7 if the repetition of digits is not allowed, is ______________.
Your input ____
4
JEE Main 2021 (Online) 27th July Evening Shift
Numerical
+4
-1
Change Language
Let n be a non-negative integer. Then the number of divisors of the form "4n + 1" of the number (10)10 . (11)11 . (13)13 is equal to __________.
Your input ____
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