Question
[39]. A pond weed doubles its patch count every day. Starting from a single patch on the first morning, how many patches will there be after the patch count has doubled seven times? / तालाब की एक खरपतवार हर दिन अपनी संख्या दोगुनी कर देती है। पहली सुबह एक पैच से शुरू करके, संख्या के सात बार दोगुनी होने के बाद कितने पैच हो जाएँगे?
Option 2 : 128
Detailed Solution
सही उत्तर 128 है।
After seven doublings the count is 2⁷ = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128. / सात बार दोगुनी होने के बाद संख्या 2⁷ = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128 है।
- ->SSC CGL Admit Card 2026Download Tier — 1 Hall Ticket Region — wise, Exam Day Rules
- ->SSC CGL Exam Date 2026Tier — 1 Schedule (30 Sep–30 Oct), Shifts, City Slip & Admit Card Dates
- ->SSC CGL Exam Date 2026Tier — 1 Schedule (30 Sep–30 Oct), Shifts, City Slip & Admit Card Dates
- ->SSC CGL 2026 Notification Out10,731 Vacancies, Apply Online, Exam Dates, Eligibility
- ->SSC GD Physical Test 2026PET/PST Running, Height, Chest Standards, Dates
- ->SSC GD Constable Cut Off 2026 OutState — wise, Category — wise Cut Off Marks (Male/Female)
- ->SSC GD Constable Result 2026 Out1,97,408 Candidates Shortlisted for PET/PST — Check Merit List PDF
- ->RRB NTPC Cut Off 2026Expected CBT — 1 Cut Off, Previous Year Cut Offs (Zone — wise)
Recommended Test Series
Attempt full-length mock tests, sectional papers & All India Rank
AIIMS CRE Social Security Officer, Manager Grade-II & Superintendent Test Series 2026
AIIMS CRE Social Security Officer, Manager Grade-II & Superintendent Test Series 2026
20 Total Tests
- •20 Full Test (Prelims)
SSC GD Constable Test Series
SSC GD Constable Test Series
145 Total Tests
- •15 Full Test (Prelims)
- •50 Sectional Test
- •55 Chapter Test
- +25 more tests
DSSSB Junior Scientific Assistant (LieDetection) Test Series 2026 | 25+ Mock Tests
DSSSB Junior Scientific Assistant (LieDetection) Test Series 2026 | 25+ Mock Tests
120 Total Tests
- •20 Full Test (Prelims)
- •100 Sectional Test
AIIMS CRE Assistant Security Officer Test Series 2026
AIIMS CRE Assistant Security Officer Test Series 2026
70 Total Tests
- •20 Full Test (Prelims)
- •50 Sectional Test
More Mock Test Questions
[1]. Read the following passage carefully: Passage: "The old iron bridge over the Kosi had carried carts for eighty years, but engineers dec...
[2]. Read the following passage carefully: Passage: "The old iron bridge over the Kosi had carried carts for eighty years, but engineers dec...
[3]. Read the following passage carefully: Passage: "The old iron bridge over the Kosi had carried carts for eighty years, but engineers dec...
[4]. Read the following passage carefully: Passage: "The old iron bridge over the Kosi had carried carts for eighty years, but engineers dec...
[5]. Read the following passage carefully: Passage: "The old iron bridge over the Kosi had carried carts for eighty years, but engineers dec...
[6]. The synonym of 'ancient' is —
[7]. The antonym of 'brave' is —
[8]. Choose the correct preposition: He died ___ cholera.
prepsnap.in • Mock TestQuestion:
[39]. A pond weed doubles its patch count every day. Starting from a single patch on the first morning, how many patches will there be after the patch count has doubled seven times? / तालाब की एक खरपतवार हर दिन अपनी संख्या दोगुनी कर देती है। पहली सुबह एक पैच से शुरू करके, संख्या के सात बार दोगुनी होने के बाद कितने पैच हो जाएँगे?
Correct Answer: 128
After seven doublings the count is 2⁷ = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128. / सात बार दोगुनी होने के बाद संख्या 2⁷ = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128 है।