High School

23. Which of the following calendar dates represent a palindrome?

A. 15/02/2015
B. 20/10/2010
C. 10/20/2010
D. 05/02/2050

24. In which of the following options is it not possible to get the number 5900 using combinations formed by addition?

A. 3700, 500
B. 3000, 725
C. 4850, 350
D. None of these

Answer :

To solve these two questions, let's break down each part step-by-step:

Question 23: Determine which date is a palindrome.

A palindrome is a sequence that reads the same forward and backward. For dates, this is typically checked by the format DD/MM/YYYY.

Let's examine each option:

(a) 15/02/2015: When reversed, this reads 5102/21/51, which is not the same.

(b) 20/10/2010: When reversed, this reads 0102/01/02, which is not the same.

(c) 10/20/2010: When reversed, this reads 0102/02/01, which is not the same.

(d) 05/02/2050: When reversed, this reads 0502/20/50, which is not the same.

None of the dates provided are palindromes in the given DD/MM/YYYY format.

Question 24: Determine which combination cannot form the number 5900 by addition.

Let's check each option:

(a) 3700 + 500 = 4200, which doesn't sum to 5900.

(b) 3000 + 725 = 3725, which doesn't sum to 5900.

(c) 4850 + 350 = 5200, which doesn't sum to 5900.

Since none of these options sum to 5900, the correct choice is d) None of these. None of these combinations can result in the number 5900.

In conclusion, for Question 23, there is no palindrome date, and for Question 24, the correct answer is 'd) None of these'.

Make sure to check each part to ensure the options work as intended. Understanding the format and checking calculations carefully will help solve these types of questions.