Search for: If b is the first term of an infinite G.P. whose sum is five, then b lies in the interval : If b is the first term of an infinite G.P. whose sum is five, then b lies in the interval : A(−∞,−101)B(−10,0)C(0,10)D[10,∞) Fill Out the Form for Expert Academic Guidance!l Grade ---Class 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12 Target Exam JEENEETCBSE +91 Preferred time slot for the call ---9 am10 am11 am12 pm1 pm2 pm3 pm4 pm5 pm6 pm7 pm8pm9 pm10pm Please indicate your interest Live ClassesBooksTest SeriesSelf Learning Language ---EnglishHindiMarathiTamilTeluguMalayalam Are you a Sri Chaitanya student? NoYes Verify OTP Code (required) I agree to the terms and conditions and privacy policy. Solution:Let b,br,br2,…… been infinite G.P. with first term b, common ratio r and sum = 5.∴5=b1−r;|r|<1⇒b5=1−r⇒r=1−b5Now, |r|<1⇒1−b5<1⇒−1<1−b5<1⇒0<−b5+2<2⇒0<10−b5<2⇒0<−b+10<10⇒b<10 and b>0 or b∈(0,10) Related content JEE Main 2024 April 5 Question Paper with Solutions – Shift 1, 2 Answer Key PDF CBSE Class 9 English Tenses Worksheet Courses After 12th Commerce with/without Maths Algebraic Expressions Class 7 Worksheet Class 9 English Active And Passive Worksheet DU NEET Merit List 2023 Chandigarh NEET UG Merit List 2023 Words Without Vowels Tamil Nadu NEET UG Merit List 2023 Preposition Worksheet for Class 7