P-ब्लॉक के तत्व | Class 11 NCERT रसायन विज्ञान | 1 PM Class By Shilpa Ma'am | L4 | Hindi Medium

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After every period, 5 minutes are given free to the students. The exact duration of each period is (a) 42 minutes (b) 48 minutes (c) 51 minutes (d) 53 minutes

Imagine that your watch was correct at noon, but then it began to lose 30 minutes each hour. It now shows 4 p.m.but it stopped 5 hours ago.What is the correct time now? (a) 9.30 p.m.quad (b) 11 p.m.( c) 1 a.m.quad (d) 1.30 a.m.

Let l = {0,pm1,pm2,pm3,pm4,...} and R={(a,b):(a-b)//4=k,kinl} is an equivalence relation, find equivalence class[0].