Gyaanshalaa

CLOCK (ERROR) TYPE 1: When the Minute Hand overtakes the Hour Hand either fast or slow. Example : If in a clock the minute hand overtakes the hour hand in 65 minutes of correct time then how much does the clock gain or loss in a day ? a. 24/23 fast b. 24/123 slow c. 24/ 23 slow d. 24/ 123 fast Sol :                                 5            After every  65  ━━ minutes , Minute Hand overtakes the Hour Hand.                                        11 According to question, the Minute Hand overtakes hour Hand in 65 minutes. The Clock is faster than the usual.    ...

Image Based Mirror image Based : The image of an object when seen in a mirror is called its mirror reflection or mirror image.  Right side of the clock shows as mirror reflection left side of clock and vice-versa.     Case 1 : If there is a time between 00:01 to 11:59;     Method : Subtract from 11:60    Case 2 :  If there is a time between 12:01 to 23:59;     Method : Subtract from 23:60    Case 3 : To find out exact time as hour    Method : Subtract from 12   FOOD FOR THOUGHT : AM and PM has no effect on the calculation of the Question.   Examples :   Q 1 . What is the mirror image of 8 O'clock ? 5 O'clock  4  O'clock  4: 01  4 : 59 Sol : Mirror image of 4 O'clock = 12 - 8 = 4 O'clock Q 2. What is the mirror image of  18 O'clock ? 5 O'clock 4 O'clock 6 O'clock 7 O'clock Sol : Mirror image of 18 O'clock = 24 - 18 = 6 O'clo...