Zeolites and Alums || Questions based on 13th and 14th Group Members

The average of 24 numbers is 65. The average of first 11 numbers is 67 and the average of last 10 numbers is 70. If the 12th number is 13 less than the 13th number and the 14th number is one more than the 13th number, then the average of 12th and 14th number is: 24 संख्याओं का औसत 65 है | पहली 11 संख्याओं का औसत 67 है तथा अंतिम 10 संख्याओं का औसत 70 है| यदि 12वीं संख्या 13वीं संख्या से 13 कम है तथा 14वीं संख्या 13वीं संख्या से एक अधिक है, तो 12वीं और 14वीं संख्या का औसत ज्ञात करें |

Clitellum is present around 13th, 14th and 15th segments of earthworm.

Zeolites, 15th Group Elements, Hydrides OF 15th Group Elements Stablity, Oxides OF Nitrogen, Compounds OF Nitrogen

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3, then find the 10th term.